fix build secret name

Author: lohanidamodar

.github/workflows/build-and-push.yml

@@ -20,7 +20,7 @@ jobs:
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2