Try fixing failing CI

Author: hansthen

.github/workflows/test_streamlit_folium.yml

@@ -41,7 +41,8 @@ jobs:
     - name: Install streamlit_folium dev dependencies
       shell: bash -l {0}
       run: |
-        conda install --file streamlit_folium/tests/requirements.txt
+        python -m pip install --upgrade pip
+        pip install -r tests/requirements.txt
 
     - name: Install streamlit-folium
       shell: bash -l {0}