fix(deps): update dependency core-js to v3.6.1

Author: renovate-bot

frontend/package.json

@@ -33,7 +33,7 @@
     "apollo-angular-link-http": "1.8.0",
     "apollo-cache-inmemory": "1.6.2",
     "apollo-client": "2.6.3",
-    "core-js": "3.1.4",
+    "core-js": "3.6.1",
     "graphql": "14.4.2",
     "graphql-tag": "2.10.1",
     "hammerjs": "2.0.8",