fix(deps): bump core-js from 3.8.3 to 3.9.0

Bumps [core-js](https://github.com/zloirock/core-js) from 3.8.3 to 3.9.0.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](zloirock/core-js@v3.8.3...v3.9.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -35,7 +35,7 @@
     "bluebird-retry": "0.11.0",
     "brakes": "2.8.0",
     "chart.js": "2.9.4",
-    "core-js": "3.8.3",
+    "core-js": "3.9.0",
     "facebook-login-for-robots": "1.1.150",
     "font-awesome": "4.7.0",
     "hammerjs": "2.0.8",