Bump @vitest/coverage-c8 from 0.23.4 to 0.28.5

Bumps [@vitest/coverage-c8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-c8) from 0.23.4 to 0.28.5.
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v0.28.5/packages/coverage-c8)

---
updated-dependencies:
- dependency-name: "@vitest/coverage-c8"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]