chore(deps-dev): bump @vscode/test-electron from 2.3.8 to 2.3.9

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]>

package.json

@@ -756,7 +756,7 @@
     "@types/which": "^3.0.0",
     "@typescript-eslint/eslint-plugin": "^5.59.8",
     "@typescript-eslint/parser": "^5.62.0",
-    "@vscode/test-electron": "^2.3.8",
+    "@vscode/test-electron": "^2.3.9",
     "c8": "^9.1.0",
     "eslint": "^8.56.0",
     "eslint-plugin-import": "^2.28.1",