Bump @testing-library/jest-dom in /templates/react-javascript

Bumps [@testing-library/jest-dom](https://github.com/testing-library/jest-dom) from 6.4.2 to 6.6.2.
- [Release notes](https://github.com/testing-library/jest-dom/releases)
- [Changelog](https://github.com/testing-library/jest-dom/blob/main/CHANGELOG.md)
- [Commits](testing-library/jest-dom@v6.4.2...v6.6.2)

---
updated-dependencies:
- dependency-name: "@testing-library/jest-dom"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

templates/react-javascript/package-lock.json

@@ -56,7 +56,7 @@
     "@babel/preset-env": "^7.24.0",
     "@babel/preset-react": "^7.23.3",
     "@lhci/cli": "^0.14.0",
-    "@testing-library/jest-dom": "6.4.2",
+    "@testing-library/jest-dom": "6.6.2",
     "@testing-library/react": "^14.2.2",
     "@vitejs/plugin-react": "^4.2.1",
     "babel-jest": "^29.7.0",