Not all release notes have channels, so I have prepared a list of release note pages
"https://cloud.google.com/access-context-manager/docs/release-notes",
"https://cloud.google.com/ai-hub/docs/release-notes",
"https://cloud.google.com/ai-platform/data-labeling/docs/release-notes",
"https://cloud.google.com/ai-platform/deep-learning-vm/docs/release-notes",
"https://cloud.google.com/ai-platform/docs/release-notes",
"https://cloud.google.com/ai-platform/notebooks/docs/release-notes",
"https://cloud.google.com/anthos-config-management/docs/release-notes",
"https://cloud.google.com/anthos/docs/release-notes",
"https://cloud.google.com/anthos/gke/docs/on-prem/release-notes",
"https://cloud.google.com/anthos/multicluster-management/connect/release-notes",
"https://cloud.google.com/appengine/docs/admin-api/release-notes",
"https://cloud.google.com/appengine/docs/flexible/custom-runtimes/release-notes",
"https://cloud.google.com/appengine/docs/flexible/go/release-notes",
"https://cloud.google.com/appengine/docs/flexible/php/release-notes",
"https://cloud.google.com/appengine/docs/java/release-notes",
"https://cloud.google.com/appengine/docs/python/release-notes",
"https://cloud.google.com/appengine/docs/standard/go/release-notes",
"https://cloud.google.com/appengine/docs/standard/go111/release-notes",
"https://cloud.google.com/appengine/docs/standard/java/release-notes",
"https://cloud.google.com/appengine/docs/standard/java11/release-notes",
"https://cloud.google.com/appengine/docs/standard/nodejs/release-notes",
"https://cloud.google.com/appengine/docs/standard/php/release-notes",
"https://cloud.google.com/appengine/docs/standard/php7/release-notes",
"https://cloud.google.com/appengine/docs/standard/python/release-notes",
"https://cloud.google.com/appengine/docs/standard/python3/release-notes",
"https://cloud.google.com/appengine/docs/standard/ruby/release-notes",
"https://cloud.google.com/armor/docs/release-notes",
"https://cloud.google.com/asset-inventory/docs/release-notes",
"https://cloud.google.com/automl-tables/docs/release-notes",
"https://cloud.google.com/bi-engine/docs/release-notes",
"https://cloud.google.com/bigquery-ml/docs/release-notes",
"https://cloud.google.com/bigquery-transfer/docs/release-notes",
"https://cloud.google.com/bigquery/docs/release-notes",
"https://cloud.google.com/billing/docs/release-notes",
"https://cloud.google.com/binary-authorization/docs/release-notes",
"https://cloud.google.com/cdn/docs/release-notes",
"https://cloud.google.com/cloud-build/docs/release-notes",
"https://cloud.google.com/cloud-build/release-notes",
"https://cloud.google.com/code/docs/intellij/release-notes",
"https://cloud.google.com/composer/docs/release-notes",
"https://cloud.google.com/compute/docs/release-notes",
"https://cloud.google.com/compute/docs/security-bulletins",
"https://cloud.google.com/config-connector/docs/release-notes",
"https://cloud.google.com/container-optimized-os/docs/release-notes",
"https://cloud.google.com/container-optimized-os/docs/release-notes/m69",
"https://cloud.google.com/container-optimized-os/docs/release-notes/m73",
"https://cloud.google.com/container-registry/docs/release-notes",
"https://cloud.google.com/data-catalog/docs/release-notes",
"https://cloud.google.com/data-fusion/docs/release-notes",
"https://cloud.google.com/dataflow/docs/resources/release-notes-java-2",
"https://cloud.google.com/dataflow/docs/resources/release-notes-python",
"https://cloud.google.com/dataflow/docs/resources/release-notes-service",
"https://cloud.google.com/dataflow/release-notes/release-notes-java-1",
"https://cloud.google.com/dataprep/docs/release-notes",
"https://cloud.google.com/datastore/release-notes",
"https://cloud.google.com/debugger/docs/release-notes",
"https://cloud.google.com/deployment-manager/docs/release-notes",
"https://cloud.google.com/dialogflow/docs/release-notes",
"https://cloud.google.com/dlp/docs/release-notes",
"https://cloud.google.com/dns/docs/release-notes",
"https://cloud.google.com/endpoints/docs/release-notes",
"https://cloud.google.com/error-reporting/docs/release-notes",
"https://cloud.google.com/event-threat-detection/docs/release-notes",
"https://cloud.google.com/filestore/docs/release-notes",
"https://cloud.google.com/firestore/docs/release-notes",
"https://cloud.google.com/functions/docs/release-notes",
"https://cloud.google.com/gke-on-prem/docs/archive/1.0/release-notes",
"https://cloud.google.com/gke-on-prem/docs/release-notes",
"https://cloud.google.com/healthcare/docs/release-notes",
"https://cloud.google.com/iam/docs/permissions-change-log",
"https://cloud.google.com/iam/docs/release-notes",
"https://cloud.google.com/iap/docs/release-notes",
"https://cloud.google.com/identity-platform/docs/release-notes",
"https://cloud.google.com/interconnect/docs/release-notes",
"https://cloud.google.com/iot/docs/release-notes",
"https://cloud.google.com/istio/docs/istio-on-gke/release-notes",
"https://cloud.google.com/kms/docs/release-notes",
"https://cloud.google.com/kubernetes-engine/docs/release-notes",
"https://cloud.google.com/kubernetes-engine/docs/release-notes-rapid",
"https://cloud.google.com/kubernetes-engine/docs/release-notes-regular",
"https://cloud.google.com/kubernetes-engine/docs/release-notes-stable",
"https://cloud.google.com/kubernetes-engine/docs/security-bulletins",
"https://cloud.google.com/kubernetes-engine/release-notes",
"https://cloud.google.com/load-balancing/docs/release-notes",
"https://cloud.google.com/logging/docs/release-notes",
"https://cloud.google.com/managed-microsoft-ad/docs/release-notes",
"https://cloud.google.com/marketplace/docs/partners/release-notes",
"https://cloud.google.com/marketplace/docs/release-notes",
"https://cloud.google.com/memorystore/docs/redis/release-notes",
"https://cloud.google.com/migrate/compute-engine/docs/4.8/release-notes",
"https://cloud.google.com/monitoring/docs/release-notes",
"https://cloud.google.com/nat/docs/release-notes",
"https://cloud.google.com/natural-language/automl/docs/release-notes",
"https://cloud.google.com/network-intelligence-center/docs/release-notes",
"https://cloud.google.com/network-tiers/docs/release-notes",
"https://cloud.google.com/profiler/docs/release-notes",
"https://cloud.google.com/pubsub/docs/release-notes",
"https://cloud.google.com/recommendations-ai/docs/release-notes",
"https://cloud.google.com/release-notes",
"https://cloud.google.com/resource-manager/docs/release-notes",
"https://cloud.google.com/router/docs/release-notes",
"https://cloud.google.com/run/docs/gke/release-notes",
"https://cloud.google.com/run/docs/release-notes",
"https://cloud.google.com/scheduler/docs/release-notes",
"https://cloud.google.com/sdk/docs/release-notes",
"https://cloud.google.com/secret-manager/docs/release-notes",
"https://cloud.google.com/security-command-center/docs/release-notes",
"https://cloud.google.com/security-scanner/docs/release-notes",
"https://cloud.google.com/service-infrastructure/docs/release-notes",
"https://cloud.google.com/service-mesh/docs/release-notes",
"https://cloud.google.com/service-usage/docs/release-notes",
"https://cloud.google.com/source-repositories/docs/release-notes",
"https://cloud.google.com/spanner/docs/release-notes",
"https://cloud.google.com/sql/docs/mysql/release-notes",
"https://cloud.google.com/sql/docs/postgres/release-notes",
"https://cloud.google.com/sql/docs/release-notes",
"https://cloud.google.com/sql/docs/sqlserver/release-notes",
"https://cloud.google.com/stackdriver/docs/release-notes",
"https://cloud.google.com/storage-transfer/docs/release-notes",
"https://cloud.google.com/storage/docs/release-notes",
"https://cloud.google.com/tasks/docs/release-notes",
"https://cloud.google.com/tools/powershell/docs/release-notes",
"https://cloud.google.com/tools/visual-studio/docs/release-notes",
"https://cloud.google.com/trace/docs/release-notes",
"https://cloud.google.com/traffic-director/docs/release-notes",
"https://cloud.google.com/translate/automl/docs/release-notes",
"https://cloud.google.com/translate/docs/release-notes",
"https://cloud.google.com/velostrata/docs/anthos-migrate/release-notes",
"https://cloud.google.com/velostrata/docs/release-notes",
"https://cloud.google.com/video-intelligence/automl/docs/release-notes",
"https://cloud.google.com/video-intelligence/automl/object-tracking/docs/release-notes",
"https://cloud.google.com/video-intelligence/docs/release-notes",
"https://cloud.google.com/vision/automl/docs/release-notes",
"https://cloud.google.com/vision/automl/object-detection/docs/release-notes",
"https://cloud.google.com/vision/docs/release-notes",
"https://cloud.google.com/vision/product-search/docs/release-notes",
"https://cloud.google.com/vpc-service-controls/docs/release-notes",
"https://cloud.google.com/vpc/docs/networking-release-notes",
"https://cloud.google.com/vpc/docs/release-notes",
"https://cloud.google.com/vpn/docs/release-notes",
"https://cloud.google.com/vpn/docs/resources/release-notes",