Bump @vscode/test-electron from 2.3.10 to 2.4.0

Bumps [@vscode/test-electron](https://github.com/Microsoft/vscode-test) from 2.3.10 to 2.4.0.
- [Changelog](https://github.com/microsoft/vscode-test/blob/main/CHANGELOG.md)
- [Commits](microsoft/vscode-test@v2.3.10...v2.4.0)

---
updated-dependencies:
- dependency-name: "@vscode/test-electron"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>