fix no space left issue

Signed-off-by: Yun Liu <[email protected]>

Author: KumoLiu

.github/workflows/pythonapp.yml

@@ -232,6 +232,7 @@ jobs:
         key: ${{ runner.os }}-pip-${{ steps.pip-cache.outputs.datew }}
     - name: Install dependencies
       run: |
+        find  /opt/hostedtoolcache/* -maxdepth 0 ! -name 'Python' -exec rm -rf {} \;
         python -m pip install --upgrade pip wheel
         python -m pip install -r docs/requirements.txt
     - name: Make html