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-image.yml

@@ -33,7 +33,7 @@ jobs:
 
       # See issue with multi-arch build + load : https://github.com/docker/buildx/issues/59
       - name: Build images (multi-architecture)
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile
@@ -46,7 +46,7 @@ jobs:
           tags: ghusta/postgres-world-db:ci_${{ steps.now.outputs.timestamp }}
 
       - name: Build image for latest postgres
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile
@@ -60,7 +60,7 @@ jobs:
           tags: ghusta/postgres-world-db:ci_${{ steps.now.outputs.timestamp }}-latest
 
       - name: Build image for latest alpine
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile
@@ -75,7 +75,7 @@ jobs:
 
       # See : https://github.com/djimenezc/docker-multi-arch/commit/abf1ccfc0c37d4b9cbdce5a96b6fb5d48903e6a8
       - name: Load only one architecture
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile

.github/workflows/docker-publish-on-tag.yml

@@ -53,7 +53,7 @@ jobs:
       # https://docs.docker.com/build/ci/github-actions/multi-platform/
       - name: Build and push Docker images (multi-architecture)
         id: build-and-push
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           build-args: |
@@ -72,7 +72,7 @@ jobs:
 
       - name: Build and push Docker image for latest alpine variant
         id: build-and-push-alpine
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         if: ${{ env.BUILD_PUSH_ALPINE == '1' }}
         with:
           context: .