build(deps): bump docker/build-push-action from 6.11.0 to 6.12.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.11.0 to 6.12.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@b32b51a...67a2d40)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/dockerimage.yml

@@ -46,7 +46,7 @@ jobs:
 
       - name: MAIN – Build and push
         if: ${{ github.event_name == 'push' }}
-        uses: docker/build-push-action@b32b51a8eda65d6793cd0494a773d4f6bcef32dc # v6.11.0
+        uses: docker/build-push-action@67a2d409c0a876cbe6b11854e3e25193efe4e62d # v6.12.0
         with:
           context: .
           file: Dockerfile
@@ -56,7 +56,7 @@ jobs:
 
       - name: PR – build only
         if: ${{ github.event_name == 'pull_request' }}
-        uses: docker/build-push-action@b32b51a8eda65d6793cd0494a773d4f6bcef32dc # v6.11.0
+        uses: docker/build-push-action@67a2d409c0a876cbe6b11854e3e25193efe4e62d # v6.12.0
         with:
           context: .
           file: Dockerfile