chore(deps-dev): bump @vitest/coverage-v8

Bumps [@vitest/coverage-v8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-v8) from 2.1.2 to 3.1.4.
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v3.1.4/packages/coverage-v8)

---
updated-dependencies:
- dependency-name: "@vitest/coverage-v8"
  dependency-version: 3.1.4
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

generators/client/templates/vitest/package.json

@@ -7,7 +7,7 @@
 	"devDependencies": {
 		"@sveltejs/vite-plugin-svelte": "3.1.2",
 		"@vitest/ui": "2.1.2",
- 		"@vitest/coverage-v8": "2.1.2",
+ 		"@vitest/coverage-v8": "3.1.4",
 		"jsdom": "25.0.1",
 		"vitest" : "2.1.2",
 		"vitest-sonar-reporter": "2.0.0"