Bump @testing-library/react from 15.0.7 to 16.0.0 (#2896)

Bumps [@testing-library/react](https://github.com/testing-library/react-testing-library) from 15.0.7 to 16.0.0.
- [Release notes](https://github.com/testing-library/react-testing-library/releases)
- [Changelog](https://github.com/testing-library/react-testing-library/blob/main/CHANGELOG.md)
- [Commits](testing-library/react-testing-library@v15.0.7...v16.0.0)

---
updated-dependencies:
- dependency-name: "@testing-library/react"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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package.json

@@ -70,7 +70,7 @@
   },
   "devDependencies": {
     "@testing-library/jest-dom": "^6.4.5",
-    "@testing-library/react": "^15.0.7",
+    "@testing-library/react": "^16.0.0",
     "@testing-library/user-event": "^14.5.1",
     "@types/gatsbyjs__reach-router": "^2.0.4",
     "@types/prismjs": "^1.26.4",