Bump @testing-library/jest-dom in /extensions/ql-vscode (#2723)

Bumps [@testing-library/jest-dom](https://github.com/testing-library/jest-dom) from 5.16.5 to 6.0.0.
- [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@v5.16.5...v6.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Charis Kyriakou <charisk@users.noreply.github.com>

Author: dependabot[bot]

extensions/ql-vscode/package-lock.json

@@ -1882,7 +1882,7 @@
     "@storybook/react-webpack5": "^7.1.0",
     "@storybook/theming": "^7.1.0",
     "@testing-library/dom": "^9.3.0",
-    "@testing-library/jest-dom": "^5.16.5",
+    "@testing-library/jest-dom": "^6.0.0",
     "@testing-library/react": "^14.0.0",
     "@testing-library/user-event": "^14.4.3",
     "@types/child-process-promise": "^2.2.1",