An in-range update of angular2 is breaking the build 🚨 about link-preview

[greenkeeper]

• The dependency @angular/material was updated from 7.1.1 to 7.2.0.
• The dependency @angular/cdk was updated from 7.1.1 to 7.2.0.

Your tests are still failing with these versions. Compare changes

Release Notes for gold-snowman

7.2.0 "gold-snowman" (2018-12-18)

Bug Fixes

• a11y: inconsistent runtime value for ListKeyManager.activeItem (#14154) (c4b3484), closes #14152
• autocomplete: update template when changing autocomplete in trigger (#13814) (904a5ea)
• badge: aria-label not being updated if description changes (#14393) (ab78183)
• bottom-sheet: bottom-sheet content not being read out by screen readers (#14534) (9485aff), closes #10591
• cdk/stepper: exported injection token referring to Material (#14339) (b584888)
• chips: don't handle separator keys while pressing modifiers (#14424) (d1cec1f)
• drag-drop: account for out of view container and stacking order (#14257) (c5be8d3), closes #14231
• drag-drop: error on touch end (#14392) (53cecbb), closes #14390
• drag-drop: handle placeholder and preview templates changing after init (#14541) (bfacbb5)
• drag-drop: prevent text selection while dragging on Safari (#14405) (220e388), closes #14403
• drag-drop: showing touch device tap highlight when using a handle (#14549) (8a3d21a)
• drag-drop: throw better error when attaching to non-element node (#14221) (31f0e6d)
• drag-drop: unable to stop dragging after quick double click (#14506) (fbb2a13)
• drawer: ensure all observables are unsubscribed (#13378) (f7dcc27)
• form-field: long labels and option values going under select arrow (#14268) (166279b)
• form-field: native select label floating incorrectly when invalid value is set (#14263) (9c65c87)
• form-field: outline gap not being calculated when element starts off invisible (#13477) (e579181), closes #13328
• form-field: outline gap not being recalculated on direction changes (#13478) (b78a750)
• grid-list: allow more units for gutter width and row height (#14341) (f176119)
• menu: accidentally tapping on sub-menu content that overlaps trigger on touch devices (#14538) (f2a06ab)
• menu: reduce specificity of icon selector (#14389) (74e945a)
• menu: unable to set icon color dynamically (#14161) (48e4f65), closes #14151
• schematics: drag-drop schematic two consecutive commas (#14446) (35fd998)
• schematics: two consecutive commas generated (#14371) (dd6065c), closes #14366
• sidenav: content margins not updated on viewport changes (#14089) (b15392d)
• snack-bar: announcing same message twice to screen readers (#13298) (3fb4b23)
• stepper: ignoring custom falsy value for hasError (#14337) (7fac915), closes #14333
• text-field: add fallback for browsers that don't support requestAnimationFrame (#14519) (c94812d)
• tree: allow tree node to have undefined child or null child (#14482) (eeda91d)
• tree: handle null children in nested tree (#14547) (364376e), closes #10886 #14545
• reference symbols for example components rather than providing a string of the component name (#13992) (d0d97c3)
• workaround for es2015 inheritance not always working (#13834) (a22a9fa)

Features

• drag-drop: add class to indicate whether a container can receive an item (#14532) (c6dc070), closes #14439
• drag-drop: add released event (#14513) (792d536), closes #14498
• drag-drop: add the ability to constrain dragging to an element (#14242) (8432e80), closes #14211
• drag-drop: allow entire group of drop lists to be disabled (#14179) (94e76de)
• drag-drop: indicate in dropped event whether item was dropped outside of container (#14140) (42de6a2), closes #14136