build(deps-dev): bump the vitest group in /frontend with 2 updates

Bumps the vitest group in /frontend with 2 updates: [@vitest/coverage-v8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-v8) and [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest).


Updates `@vitest/coverage-v8` from 2.1.6 to 2.1.8
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v2.1.8/packages/coverage-v8)

Updates `vitest` from 2.1.6 to 2.1.8
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v2.1.8/packages/vitest)

---
updated-dependencies:
- dependency-name: "@vitest/coverage-v8"
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: vitest
- dependency-name: vitest
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: vitest
...

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

frontend/package.json

@@ -69,7 +69,7 @@
     "@types/react-test-renderer": "^19.0.0",
     "@types/swagger-ui-react": "^4.18.3",
     "@vitejs/plugin-react": "^4.3.3",
-    "@vitest/coverage-v8": "^2.1.6",
+    "@vitest/coverage-v8": "^2.1.8",
     "autoprefixer": "^10.4.20",
     "browserslist-to-esbuild": "^2.1.1",
     "graphql": "^16.9.0",