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/docker_build.yml

@@ -75,7 +75,7 @@ jobs:
             type=raw,value=${{ needs.version.outputs.Major }}
 
       - name: Build and export to Docker
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           load: true
           tags: middleware:test
@@ -97,7 +97,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and Push
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.metadata.outputs.tags }}