directory_writer: actions/checkout@v1 # Use v1, NOT v2 (#1796

Author: cclauss

.github/workflows/directory_writer.yml

@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v1  # v1, NOT v2
       - uses: actions/setup-python@v1
         with:
           python-version: 3.x