Update documentation.yml

Author: dshemetov

.github/workflows/documentation.yml

@@ -11,8 +11,13 @@ permissions:
 jobs:
   docs:
     runs-on: ubuntu-latest
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+      DELPHI_EPIDATA_KEY: ${{ secrets.DELPHI_GITHUB_ACTIONS_EPIDATA_API_KEY }}
     steps:
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - uses: actions/setup-python@v5
       - name: Install dependencies
         run: |