Update Docker Hub credentials in workflow

Author: archlitchi

.github/workflows/push-kai-image.yml

@@ -26,8 +26,8 @@ jobs:
       - name: Log in to Docker Hub
         uses: docker/login-action@v3
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          username: ${{ secrets.DOCKERHUB_TOKEN }}
+          password: ${{ secrets.DOCKERHUB_PASSWD }}
 
       - name: Build and push webhook image
         uses: docker/build-push-action@v6