Bump @testing-library/jest-dom (#3764)

Bumps the testing-library group in /extensions/ql-vscode with 1 update: [@testing-library/jest-dom](https://github.com/testing-library/jest-dom).


Updates `@testing-library/jest-dom` from 6.5.0 to 6.6.1
- [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@v6.5.0...v6.6.1)

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

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

Author: dependabot[bot]

extensions/ql-vscode/package-lock.json

@@ -2026,7 +2026,7 @@
     "@storybook/react-vite": "^8.3.5",
     "@storybook/theming": "^8.2.4",
     "@testing-library/dom": "^10.4.0",
-    "@testing-library/jest-dom": "^6.5.0",
+    "@testing-library/jest-dom": "^6.6.1",
     "@testing-library/react": "^16.0.1",
     "@testing-library/user-event": "^14.5.2",
     "@types/child-process-promise": "^2.2.1",