ci(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/test-release.yml

@@ -111,7 +111,7 @@ jobs:
       - name: ⚙️ Build project
         run: npm run build
       - name: 🪄 Build and push
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         continue-on-error: true
         id: docker-build-1
         with:
@@ -134,7 +134,7 @@ jobs:
             ghcr.io/${{ github.repository }}:cache-${{ hashFiles('package*.json') }}
             ghcr.io/${{ github.repository }}:next
       - name: 🪄 Build and push (second try)
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         continue-on-error: true
         if: steps.docker-build-1.outcome=='failure'
         id: docker-build-2
@@ -158,7 +158,7 @@ jobs:
             ghcr.io/${{ github.repository }}:cache-${{ hashFiles('package*.json') }}
             ghcr.io/${{ github.repository }}:next
       - name: 🪄 Build and push (third try)
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         if: steps.docker-build-2.outcome=='failure'
         continue-on-error: true
         id: docker-build-3
@@ -201,7 +201,7 @@ jobs:
       - name: 🔄 Push container to DockerHub
         id: docker-build-dh
         if: ${{ env.PUSH_TO_DOCKERHUB == 'true' }}
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           github-token: ${{ secrets.GITHUB_TOKEN }}