Bump core-js from 3.18.2 to 3.38.1 in /src/frontend (#383)

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.18.2 to 3.38.1.
- [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/v3.38.1/packages/core-js)

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

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

src/frontend/package.json

@@ -20,7 +20,7 @@
     "@vue/cli-service": "~5.0.8",
     "babel-eslint": "^10.0.3",
     "buefy": "^0.9.29",
-    "core-js": "^3.18.2",
+    "core-js": "^3.38.1",
     "css-loader": "^5.2.7",
     "eslint": "^8.57.0",
     "eslint-plugin-vue": "^9.28.0",