Bump docker/build-push-action from 5 to 6 in /.github/workflows (#2234)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...v6)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  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/docker.yml

@@ -30,7 +30,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push arm64 image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         continue-on-error: true
         with:
           context: .
@@ -40,7 +40,7 @@ jobs:
           tags: ultralytics/yolov3:latest-arm64
 
       - name: Build and push CPU image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         continue-on-error: true
         with:
           context: .
@@ -49,7 +49,7 @@ jobs:
           tags: ultralytics/yolov3:latest-cpu
 
       - name: Build and push GPU image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         continue-on-error: true
         with:
           context: .