Bump @vitest/mocker and vitest in /frontend

Bumps [@vitest/mocker](https://github.com/vitest-dev/vitest/tree/HEAD/packages/mocker) to 4.1.11 and updates ancestor dependency [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest). These dependencies need to be updated together.


Updates `@vitest/mocker` from 4.1.10 to 4.1.11
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Changelog](https://github.com/vitest-dev/vitest/blob/main/docs/releases.md)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.1.11/packages/mocker)

Updates `vitest` from 4.1.10 to 4.1.11
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Changelog](https://github.com/vitest-dev/vitest/blob/main/docs/releases.md)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.1.11/packages/vitest)

---
updated-dependencies:
- dependency-name: "@vitest/mocker"
  dependency-version: 4.1.11
  dependency-type: indirect
- dependency-name: vitest
  dependency-version: 4.1.11
  dependency-type: direct:development
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -30,7 +30,7 @@
     "puppeteer": "^25.5.0",
     "vite": "^8.2.0",
     "vite-plugin-compression2": "^2.5.3",
-    "vitest": "^4.1.10"
+    "vitest": "^4.1.11"
   },
   "dependencies": {
     "@blockly/field-colour": "^13.2.0",