chore(deps): bump docker/build-push-action from 4 to 6

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4...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>

Author: dependabot[bot]

.github/workflows/image-push-main.yml

@@ -31,15 +31,15 @@ jobs:
         with:
           images: ghcr.io/${{ steps.repo_name.outputs.repository }}
       - name: Build and push container image
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           push: true
           platforms: linux/amd64,linux/arm64
           tags: |
             ghcr.io/${{ steps.repo_name.outputs.repository }}:latest
           labels: ${{ steps.docker_meta.outputs.labels }}
       - name: Build and push container image
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           push: true
           platforms: linux/amd64,linux/arm64

.github/workflows/image-push-release.yml

@@ -39,7 +39,7 @@ jobs:
           flavor: |
             latest=false
       - name: Build and push operator image
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           platforms: linux/amd64,linux/arm64
           push: true
@@ -56,7 +56,7 @@ jobs:
           flavor: |
             latest=false
       - name: Build and push config daemon image
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           platforms: linux/amd64,linux/arm64
           push: true