build(deps-dev): bump the vitest group with 3 updates

Bumps the vitest group with 3 updates: [@vitest/coverage-v8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-v8), [@vitest/ui](https://github.com/vitest-dev/vitest/tree/HEAD/packages/ui) 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/ui` 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/ui)

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/ui"
  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>

package.json

@@ -29,7 +29,7 @@
         "@testing-library/user-event": "^14.5.2",
         "@types/eslint": "^9.6.0",
         "@types/node": "^22.9.0",
-        "@vitest/coverage-v8": "^2.1.5",
+        "@vitest/coverage-v8": "^2.1.8",
         "@vitest/ui": "^2.1.5",
         "autoprefixer": "^10.4.20",
         "bits-ui": "^1.0.0-next.69",