This "API" fetch the new image everyday by using GitHub action (see workflow folder) and name it as latest.png. It then stores the previous ones on this repository.
https://cdn.jsdelivr.net/gh/k-rol/DailyBingImageAPI@latest/images/latest.png
*Github's cache may show you yesterday's image but the link above will be updated.
https://cdn.jsdelivr.net/gh/k-rol/DailyBingImageAPI@latest/images/20220420.png