ci: handle latest tag

Author: ludovicm67

.github/workflows/docker-ods-ui.yaml

@@ -45,6 +45,7 @@ jobs:
             type=ref,event=branch
             type=sha
             type=raw,value={{branch}}-${{ github.run_id }}
+            type=raw,value=latest,enable={{is_default_branch}}
 
       - name: Build and push Docker images
         id: docker_build