Deps: 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] <[email protected]>

package.json

@@ -38,7 +38,7 @@
     "@visx/gradient": "^3.3.0",
     "@visx/shape": "^3.5.0",
     "babel-preset-react-app": "^10.0.1",
-    "core-js": "^3.37.1",
+    "core-js": "^3.39.0",
     "d3-cloud": "^1.2.7",
     "d3-color": "^3.1.0",
     "d3-force": "^3.0.0",