Bump @actions/cache from 4.1.0 to 6.0.0

Bumps [@actions/cache](https://github.com/actions/toolkit/tree/HEAD/packages/cache) from 4.1.0 to 6.0.0.
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/cache/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/cache)

---
updated-dependencies:
- dependency-name: "@actions/cache"
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]