fix: docs deploy

.github/workflows/deploy_docs.yaml

@@ -27,7 +27,7 @@ jobs:
         run: |
           pip install wheel
           pip install --no-build-isolation "Cython<3" "pyyaml==5.4.1"
-          pip install -r requirements.txt
+          pip install "Cython>=3" -r requirements.txt
           pip install sphinx sphinx-rtd-theme
 
       - name: Setup brownie networks