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/devops.yml

@@ -155,7 +155,7 @@ jobs:
     # Build and push Docker image with Buildx (don't push on PR)
     # https://github.com/docker/build-push-action
     - name: Build Docker image
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         tags: |
           ${{ env.IMAGE_NAME }}
@@ -216,7 +216,7 @@ jobs:
     # https://github.com/docker/build-push-action
     - name: Build and push Docker image
       if: ${{ github.ref == 'refs/heads/main' }}
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         push: ${{ github.event_name != 'pull_request' }}
         tags: |
@@ -230,7 +230,7 @@ jobs:
       run: echo "RELEASE_VERSION=${GITHUB_REF:11}" >> $GITHUB_ENV
     - name: Build and push Docker image
       if: ${{ startsWith(github.ref, 'refs/tags/v') }}
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         push: ${{ github.event_name != 'pull_request' }}
         tags: |