Bump core-js from 3.37.1 to 3.39.0 in /client

Bumps [core-js](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js) from 3.37.1 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>

client/package.json

@@ -16,7 +16,7 @@
     "bootstrap-vue": "2.23.1",
     "bootswatch": "4.6.2",
     "contrast-color": "1.0.1",
-    "core-js": "3.37.1",
+    "core-js": "3.39.0",
     "deep-object-diff": "1.1.9",
     "jquery": "3.7.1",
     "lodash": "4.17.21",