Build(deps-dev): update @vitest/coverage-v8 requirement

Updates the requirements on [@vitest/coverage-v8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-v8) to permit the latest version.
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.1.2/packages/coverage-v8)

---
updated-dependencies:
- dependency-name: "@vitest/coverage-v8"
  dependency-version: 4.1.2
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

extensions/vscode/package.json

@@ -165,7 +165,7 @@
     "@types/mocha": "^10.0.10",
     "@types/node": "^25.5.0",
     "@types/vscode": "^1.110.0",
-    "@vitest/coverage-v8": "^4.1.0",
+    "@vitest/coverage-v8": "^4.1.2",
     "@vscode/test-cli": "^0.0.12",
     "@vscode/test-electron": "^2.5.2",
     "@vscode/vsce": "^3.7.1",