chore(deps): bump docker/build-push-action from 6 to 7 (#2181)

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](https://github.com/docker/build-push-action/compare/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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build_docker.yml

@@ -31,7 +31,7 @@ jobs:
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v4
     - name: Build minimal image
-      uses: docker/build-push-action@v6
+      uses: docker/build-push-action@v7
       with:
         context: .
         file: docker/Dockerfile
@@ -55,7 +55,7 @@ jobs:
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v4
     - name: Build OCR image
-      uses: docker/build-push-action@v6
+      uses: docker/build-push-action@v7
       with:
         context: .
         file: docker/Dockerfile
@@ -79,7 +79,7 @@ jobs:
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v4
     - name: Build HardSubX image
-      uses: docker/build-push-action@v6
+      uses: docker/build-push-action@v7
       with:
         context: .
         file: docker/Dockerfile