chore(deps-dev): Bump core-js from 3.39.0 to 3.40.0

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.39.0 to 3.40.0.
- [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/v3.40.0/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

@@ -83,7 +83,7 @@
     "@vue/test-utils": "^1.3.6",
     "@vue/tsconfig": "^0.5.1",
     "@zamiell/typedoc-plugin-not-exported": "^0.3.0",
-    "core-js": "^3.39.0",
+    "core-js": "^3.40.0",
     "gettext-extractor": "^3.8.0",
     "gettext-parser": "^8.0.0",
     "happy-dom": "^16.5.3",