Fix syntax of publish.yml

Author: jm-mailosaur

.github/workflows/publish.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
     - name: Checkout source code
-        uses: actions/checkout@v4
+      uses: actions/checkout@v4
     - name: Checkout custom actions
       uses: actions/checkout@v4
       with: