Install coverage package

Author: hansthen

.github/workflows/test_streamlit_folium.yml

@@ -55,7 +55,7 @@ jobs:
         playwright install --with-deps
 
     - name: Install annotate-failures-plugin
-      run: pip install pytest-github-actions-annotate-failures
+      run: pip install pytest-github-actions-annotate-failures coverage
 
     - name: Install folium from source
       shell: bash -l {0}