[Demo Dependencies]: Bump the dependencies-dev group

Bumps the dependencies-dev group in /docs-src with 1 update: [@testing-library/jest-dom](https://github.com/testing-library/jest-dom).


Updates `@testing-library/jest-dom` from 6.1.6 to 6.2.0
- [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@v6.1.6...v6.2.0)

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

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

docs-src/package.json

@@ -38,7 +38,7 @@
     "react-syntax-highlighter": "^15.5.0"
   },
   "devDependencies": {
-    "@testing-library/jest-dom": "^6.1.6",
+    "@testing-library/jest-dom": "^6.2.0",
     "@testing-library/react": "^14.1.2",
     "@testing-library/user-event": "^14.5.2",
     "node-sass": "^9.0.0",