Bump @testing-library/jest-dom from 6.8.0 to 6.9.1 (#663)

Bumps [@testing-library/jest-dom](https://github.com/testing-library/jest-dom) from 6.8.0 to 6.9.1.
- [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@v6.8.0...v6.9.1)

---
updated-dependencies:
- dependency-name: "@testing-library/jest-dom"
  dependency-version: 6.9.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -61,7 +61,7 @@
     "@automattic/eslint-plugin-wpvip": "0.13.1",
     "@babel/preset-react": "7.27.1",
     "@playwright/test": "^1.56.1",
-    "@testing-library/jest-dom": "6.8.0",
+    "@testing-library/jest-dom": "6.9.1",
     "@testing-library/react": "16.3.0",
     "@testing-library/user-event": "^14.6.1",
     "@types/react-syntax-highlighter": "^15.5.13",