Build(deps-dev): update vitest requirement in /extensions/vscode

Updates the requirements on [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) 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/vitest)

---
updated-dependencies:
- dependency-name: vitest
  dependency-version: 4.1.2
  dependency-type: direct:development
...

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

Author: dependabot[bot]

extensions/vscode/package.json

@@ -178,6 +178,6 @@
     "prettier": "^3.8.1",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.57.1",
-    "vitest": "^4.1.0"
+    "vitest": "^4.1.2"
   }
 }