Bump @testing-library/dom from 9.3.3 to 9.3.4 in /extensions/ql-vscode (#3225)

Bumps [@testing-library/dom](https://github.com/testing-library/dom-testing-library) from 9.3.3 to 9.3.4.
- [Release notes](https://github.com/testing-library/dom-testing-library/releases)
- [Changelog](https://github.com/testing-library/dom-testing-library/blob/main/CHANGELOG.md)
- [Commits](testing-library/dom-testing-library@v9.3.3...v9.3.4)

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

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Author: dependabot[bot]

extensions/ql-vscode/package-lock.json

@@ -1963,7 +1963,7 @@
     "@storybook/react": "^7.1.0",
     "@storybook/react-webpack5": "^7.6.7",
     "@storybook/theming": "^7.6.7",
-    "@testing-library/dom": "^9.3.0",
+    "@testing-library/dom": "^9.3.4",
     "@testing-library/jest-dom": "^6.2.0",
     "@testing-library/react": "^14.0.0",
     "@testing-library/user-event": "^14.5.2",