Update docs.yaml

.github/workflows/docs.yaml

@@ -12,7 +12,7 @@ jobs:
     - uses: actions/setup-python@v2
       with:
         python-version: '3.10'
-    - uses: actions/checkout@main
+    - uses: actions/checkout@master
       with:
         fetch-depth: 0 # otherwise, you will failed to push refs to dest repo
     - name: install dacapo
@@ -22,7 +22,7 @@ jobs:
       with:
         documentation_path: ./docs/source
     - name: Push changes
-      uses: ad-m/github-push-action@main
+      uses: ad-m/github-push-action@master
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
         branch: gh-pages