Bump docker/setup-buildx-action from 3 to 4 (#124)

Author: dependabot[bot]

action.yml

@@ -185,7 +185,7 @@ runs:
 
     - name: Set up Docker Buildx
       if: inputs.docker-username != '' && inputs.docker-password != ''
-      uses: docker/setup-buildx-action@v3
+      uses: docker/setup-buildx-action@v4
 
     - name: Login to Registry
       if: inputs.docker-username != '' && inputs.docker-password != ''