Bump core-js from 3.15.2 to 3.16.0 in /samples/lib/spa-angular-client

Bumps [core-js](https://github.com/zloirock/core-js) from 3.15.2 to 3.16.0.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](zloirock/core-js@v3.15.2...v3.16.0)

---
updated-dependencies:
- dependency-name: core-js
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

samples/lib/spa-angular-client/package-lock.json

@@ -31,7 +31,7 @@
     "@ng-bootstrap/ng-bootstrap": "^9.1.3",
     "bootstrap": "^4.6.0",
     "bowser": "^2.11.0",
-    "core-js": "^3.15.2",
+    "core-js": "^3.16.0",
     "rxjs": "~6.6.7",
     "tslib": "^2.3.0",
     "zone.js": "~0.10.2"