chore(deps): bump docker/build-push-action from 5 to 6

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] <[email protected]>

.github/workflows/docker-ghcr.yml

@@ -19,7 +19,7 @@ jobs:
           password: ${{ secrets.GHCR_RW }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           push: true

.github/workflows/dockerhub.yml

@@ -27,7 +27,7 @@ jobs:
         run: echo "::set-output name=sha::$(git rev-parse --short HEAD)"
 
       - name: Build and push Docker image bullseye
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile
@@ -38,7 +38,7 @@ jobs:
           tags: docker.io/${{ secrets.DOCKER_NAME }}/moksha-mint:${{ steps.sha.outputs.sha }}-bullseye, docker.io/${{ secrets.DOCKER_NAME }}/moksha-mint:bullseye
 
       - name: Build and push Docker image alpine
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile.alpine