chore(deps): 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/docker-check.yml

@@ -47,7 +47,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
       
       - name: Build Docker image with BuildKit
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           push: false

.github/workflows/docker-image.yml

@@ -70,7 +70,7 @@ jobs:
       # builds, only one platform is being loaded into the cache. This would
       # prevent us from testing the other platforms.
       - name: Build Docker image (linux/amd64)
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           platforms: linux/amd64
           context: .
@@ -84,7 +84,7 @@ jobs:
           cache-to: type=gha,mode=max
 
       - name: Build Docker image (linux/arm/v7)
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           platforms: linux/arm/v7
           context: .
@@ -98,7 +98,7 @@ jobs:
           cache-to: type=gha,mode=max
 
       - name: Build Docker image (linux/arm64/v8)
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           platforms: linux/arm64/v8
           context: .
@@ -128,7 +128,7 @@ jobs:
       # This will only push the previously built images.
       - if: github.event_name != 'workflow_dispatch' || github.event.inputs.push == 'true'
         name: Publish to Docker Hub
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           platforms: linux/amd64,linux/arm/v7,linux/arm64/v8
           context: .