Forgot to add checkout instruction to script.

Author: sour-dani

.github/workflows/publish_extension.yml

@@ -7,6 +7,8 @@ jobs:
     name: Publish Extension
     runs-on: [ubuntu-latest] 
     steps:
+      - name: Checkout
+        uses: actions/checkout@v3
       - name: Test
         run: ls
       - name: Publish