build(deps): bump docker/build-push-action from 6.7.0 to 6.8.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.7.0 to 6.8.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](5cd11c3a4c...32945a3392)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/docker.yml

@@ -103,7 +103,7 @@ jobs:
           } | tee -a "${GITHUB_OUTPUT}"
 
       - name: Build Docker image
-        uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 # v6
+        uses: docker/build-push-action@32945a339266b759abcbdc89316275140b0fc960 # v6
         with:
           context: .
           load: true
@@ -133,7 +133,7 @@ jobs:
 
       - name: Deploy the tagged Docker image
         if: steps.attributes.outputs.push == 'true'
-        uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 # v6
+        uses: docker/build-push-action@32945a339266b759abcbdc89316275140b0fc960 # v6
         with:
           context: .
           push: true