Bump core-js from 3.38.1 to 3.39.0

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.38.1 to 3.39.0.
- [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/v3.39.0/packages/core-js)

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

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

package.json

@@ -29,7 +29,7 @@
     "@octokit/core": "^6.1.2",
     "@octokit/webhooks": "^13.3.0",
     "@stoplight/elements": "^8.4.5",
-    "core-js": "^3.38.1",
+    "core-js": "^3.39.0",
     "encoding": "^0.1.13",
     "figma-squircle": "^1.1.0",
     "install": "^0.13.0",