build(deps-dev): bump @vitest/coverage-v8 from 4.1.7 to 4.1.9

Bumps [@vitest/coverage-v8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-v8) from 4.1.7 to 4.1.9.
- [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/v4.1.9/packages/coverage-v8)

---
updated-dependencies:
- dependency-name: "@vitest/coverage-v8"
  dependency-version: 4.1.9
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]