Update docgen.yml

Author: narendasan

.github/workflows/docgen.yml

@@ -23,10 +23,12 @@ jobs:
           rm -rf /opt/ghc
           rm -rf "/usr/local/share/boost"
           rm -rf /usr/local/cuda/cuda-*
-      - name: Install Python
-        run:
+      - name: Install base deps
+        run: |
           apt update
           apt install -y gcc git curl wget make zlib1g-dev bzip2 libbz2-dev lzma lzma-dev libreadline-dev libsqlite3-dev libssl-dev libffi-dev doxygen pandoc
+      - name: Install Python
+        run: |
           mkdir -p /opt/circleci
           git clone https://github.com/pyenv/pyenv.git /opt/circleci/.pyenv
           export PYENV_ROOT="/opt/circleci/.pyenv"