Bump core-js from 3.14.0 to 3.15.2

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.14.0 to 3.15.2.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/commits/v3.15.2/packages/core-js)

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

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

package.json

@@ -16,7 +16,7 @@
     "awesome-typescript-loader": "^5.2.1",
     "clone-deep": "^4.0.1",
     "compare-versions": "^3.6.0",
-    "core-js": "^3.14.0",
+    "core-js": "^3.15.2",
     "cross-env": "7.0.3",
     "css-loader": "5.2.6",
     "electron": "13.1.4",