Update after review comments

Author: hansthen

.github/workflows/test_streamlit_folium.yml

@@ -13,6 +13,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+
     - name: Checkout Folium
       uses: actions/checkout@v4