Merge branch 'add-endswith-to-polyfill' into 'master'

Add endsWith to polyfill

See merge request gitlab-org/gitlab-ce!30920

app/assets/javascripts/commons/polyfills.js

@@ -13,6 +13,7 @@ import 'core-js/es/string/code-point-at';
 import 'core-js/es/string/from-code-point';
 import 'core-js/es/string/includes';
 import 'core-js/es/string/starts-with';
+import 'core-js/es/string/ends-with';
 import 'core-js/es/symbol';
 import 'core-js/es/map';
 import 'core-js/es/weak-map';