Bump @vscode/test-electron from 2.3.8 to 2.3.9 (#922)

Bumps [@vscode/test-electron](https://github.com/Microsoft/vscode-test) from 2.3.8 to 2.3.9.
- [Changelog](https://github.com/microsoft/vscode-test/blob/main/CHANGELOG.md)
- [Commits](https://github.com/Microsoft/vscode-test/commits/v2.3.9)

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

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

package.json

@@ -465,7 +465,7 @@
     "@types/ps-tree": "^1.1.4",
     "@types/sinon": "^17.0.3",
     "@types/vscode": "~1.71.0",
-    "@vscode/test-electron": "^2.3.8",
+    "@vscode/test-electron": "^2.3.9",
     "@vscode/vsce": "^2.23.0",
     "cross-env": "^7.0.3",
     "glob": "^10.3.10",