Bump wp-cli/cache-command from 2.1.3 to 2.2.0

Bumps [wp-cli/cache-command](https://github.com/wp-cli/cache-command) from 2.1.3 to 2.2.0.
- [Release notes](https://github.com/wp-cli/cache-command/releases)
- [Commits](wp-cli/cache-command@v2.1.3...v2.2.0)

---
updated-dependencies:
- dependency-name: wp-cli/cache-command
  dependency-version: 2.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]