Bump core-js from 3.23.4 to 3.23.5 in /assets

Bumps [core-js](https://github.com/zloirock/core-js) from 3.23.4 to 3.23.5.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](zloirock/core-js@v3.23.4...v3.23.5)

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

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

assets/package.json

@@ -9,7 +9,7 @@
     "@webcomponents/template": "^1.5.0",
     "child-replace-with-polyfill": "^1.0.1",
     "classlist-polyfill": "^1.2.0",
-    "core-js": "^3.23.4",
+    "core-js": "^3.23.5",
     "formdata-polyfill": "^4.0.10",
     "mdn-polyfills": "^5.20.0",
     "new-event-polyfill": "^1.0.1",