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] <support@github.com>

.github/workflows/release.yaml

@@ -41,7 +41,7 @@ jobs:
           password: ${{ secrets.NEXUS_PASSWORD }}
 
       - name: Build docker image (latest)
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           tags: |
@@ -50,7 +50,7 @@ jobs:
 
       - name: Build docker image (version)
         if: steps.semantic.outputs.new_release_published == 'true'
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           tags: |
@@ -67,7 +67,7 @@ jobs:
           docker push ${{ env.DOCKER_REGISTRY }}/shogun-admin:${{ steps.semantic.outputs.new_release_version }}
 
       - name: Build docker image e2e-tests (latest) 🏗️
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           file: Dockerfile.e2e
           context: .
@@ -77,7 +77,7 @@ jobs:
 
       - name: Build docker image e2e-tests (version) 🏗️
         if: steps.semantic.outputs.new_release_published == 'true'
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           file: Dockerfile.e2e
           context: .