Bump vitest and @vitest/coverage-v8

Bumps [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) and [@vitest/coverage-v8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-v8). These dependencies needed to be updated together.

Updates `vitest` from 3.2.4 to 4.1.8
- [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/v4.1.8/packages/vitest)

Updates `@vitest/coverage-v8` from 3.2.4 to 4.1.8
- [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/v4.1.8/packages/coverage-v8)

---
updated-dependencies:
- dependency-name: vitest
  dependency-version: 4.1.8
  dependency-type: direct:development
- dependency-name: "@vitest/coverage-v8"
  dependency-version: 4.1.8
  dependency-type: direct:development
...

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

package.json

@@ -49,7 +49,7 @@
     "@types/form-data": "^2.2.1",
     "@types/node": "^22.7.5",
     "@vitejs/plugin-vue": "5.2.1",
-    "@vitest/coverage-v8": "^3.2.4",
+    "@vitest/coverage-v8": "^4.1.8",
     "@vue/cli-plugin-babel": "^5.0.8",
     "@vue/cli-plugin-router": "~5.0.0",
     "@vue/cli-plugin-unit-jest": "~5.0.0",
@@ -83,7 +83,7 @@
     "saucectl": "^0.188.0",
     "typescript-eslint": "^8.11.0",
     "vite": "^6.4.2",
-    "vitest": "^3.2.4",
+    "vitest": "^4.1.8",
     "vue-eslint-parser": "^10.2.0",
     "wait-on": "^8.0.2"
   }