build(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]>

Author: dependabot[bot]

.github/workflows/docker_build.yml

@@ -37,7 +37,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push with latest release - SparkMagic
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         if: github.event_name == 'schedule'
         with:
           context: .
@@ -48,7 +48,7 @@ jobs:
             ${{ env.REPOSITORY_URL }}/${{ env.SPARKMAGIC_IMAGE_NAME }}
 
       - name: Build and push with latest release - Jupyter
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         if: github.event_name == 'schedule'
         with:
           context: .
@@ -59,7 +59,7 @@ jobs:
             ${{ env.REPOSITORY_URL }}/${{ env.JUPYTER_IMAGE_NAME }}
 
       - name: Build and push with local packages - SparkMagic
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         if: github.event_name == 'push'
         with:
           context: .
@@ -72,7 +72,7 @@ jobs:
             ${{ env.REPOSITORY_URL }}/${{ env.SPARKMAGIC_IMAGE_NAME }}
 
       - name: Build and push with local packages - Jupyter
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         if: github.event_name == 'push'
         with:
           context: .