Bump docker/build-push-action from 6 to 7

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6 to 7.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6...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/build.yml

@@ -48,7 +48,7 @@ jobs:
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
       - uses: docker/setup-buildx-action@v4
         id: buildx
-      - uses: docker/build-push-action@v6
+      - uses: docker/build-push-action@v7
         id: docker_build
         with:
           # cache-from: type=gha