Bump peter-evans/dockerhub-description from 3 to 4 (#322)

Bumps [peter-evans/dockerhub-description](https://github.com/peter-evans/dockerhub-description) from 3 to 4.
- [Release notes](https://github.com/peter-evans/dockerhub-description/releases)
- [Commits](peter-evans/dockerhub-description@v3...v4)

---
updated-dependencies:
- dependency-name: peter-evans/dockerhub-description
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/docker.yml

@@ -169,7 +169,7 @@ jobs:
           cache-to: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ matrix.platform.ruby_target }}:cache-${{ steps.vars.outputs.rb-sys-version }}
 
       - name: Docker Hub Description
-        uses: peter-evans/dockerhub-description@v3
+        uses: peter-evans/dockerhub-description@v4
         with:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}