Fix ci to include token for material insiders

.github/workflows/ci.yml

@@ -27,5 +27,9 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: pip install -r requirements.txt
+
+      - run:
+        git config --global url."https://github-actions:${{ secrets.MKDOCS_MATERIAL_INSIDERS }}@github".insteadOf ssh://git@github
+        pip install -r requirements.txt
+
       - run: mkdocs gh-deploy --force