chore(deps): update docker/build-push-action action to v6 (#179)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build-images.yaml

@@ -88,7 +88,7 @@ jobs:
 
     - name: Build and push docker images
       if: ${{ inputs.push == true }}
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         context: .
         file: images/${{ matrix.image }}/Dockerfile
@@ -99,7 +99,7 @@ jobs:
 
     - name: Build and upload docker image to job artifact
       if: ${{ inputs.upload_images == true }}
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         context: .
         file: images/${{ matrix.image }}/Dockerfile