Also save the generated html

Author: hansthen

.github/workflows/test_snapshots.yml

@@ -50,4 +50,5 @@ jobs:
       uses: actions/upload-artifact@v4
       with:
         name: screenshots
-        path: /tmp/screenshot_*_*.png
+        path: |
+	  /tmp/screenshot_*_*.png

tests/snapshots/test_snapshots.py

@@ -32,6 +32,7 @@ def test_screenshot(path: str):
         mismatch = pixelmatch(img_a, img_b, img_diff, threshold=0.2, includeAA=False)
 
         img_diff.save(f"/tmp/screenshot_diff_{path}.png")
+        m.save(f"/tmp/folium_map_{path}.html")
         assert mismatch < 200
 
     else: