build(deps): bump docker/build-push-action from 4 to 7

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4 to 7.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4...v7)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ci-build-image.yml

@@ -59,7 +59,7 @@ jobs:
           echo "RELEASE_VERSION=${releasever}" >> $GITHUB_ENV
 
       - name: Build and Push
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v7
         with:
           tags: ghcr.io/${{ inputs.github-repository }}/overlaybd-ci-images:${{ inputs.image-tag }}
           push: true