build(deps-dev): bump @vitest/coverage-v8 from 2.1.7 to 2.1.8

Bumps [@vitest/coverage-v8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-v8) from 2.1.7 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)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -78,7 +78,7 @@
     "@types/react-dom": "^18.3.1",
     "@types/react-world-flags": "^1.6.0",
     "@vitejs/plugin-react": "^4.3.4",
-    "@vitest/coverage-v8": "^2.1.7",
+    "@vitest/coverage-v8": "^2.1.8",
     "ajv": "^8.17.1",
     "axios-mock-adapter": "^2.1.0",
     "babel-preset-gatsby": "^3.14.0",