chore(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/container.yml

@@ -71,7 +71,7 @@ jobs:
               run: echo ::set-output name=version::${GITHUB_REF#refs/tags/v}
 
             - name: Build & Push
-              uses: docker/build-push-action@v4
+              uses: docker/build-push-action@v7
               with:
                   context: .
                   file: ./Dockerfile