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](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>

.github/workflows/build.yml

@@ -49,7 +49,7 @@ jobs:
           echo "file=${file}" >> "$GITHUB_OUTPUT"
           echo "tags=${tags}" >> "$GITHUB_OUTPUT"
       - name: Build and push ${{ matrix.php }} ${{ matrix.variant }}
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ${{ steps.meta.outputs.file }}
@@ -79,7 +79,7 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Build and push ${{ matrix.php }}
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ./src/docker/${{ matrix.php }}/Dockerfile

.github/workflows/tests.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4
       - name: Build Docker image
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ${{ matrix.variant == 'alpine' && './src/docker/Dockerfile.alpine' || './src/docker/Dockerfile' }}