build(deps): bump @actions/cache from 1.0.7 to 1.0.8

Bumps [@actions/cache](https://github.com/actions/toolkit/tree/HEAD/packages/cache) from 1.0.7 to 1.0.8.
- [Release notes](https://github.com/actions/toolkit/releases)
- [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-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]