Merge pull request #4021 from johannesloibl/master

Fix #4019

Author: nicolaskruchten

Diff for: packages/python/plotly/plotly/io/_html.py

@@ -543,7 +543,7 @@ def write_html(
         bundle_path = path.parent / "plotly.min.js"
 
         if not bundle_path.exists():
-            bundle_path.write_text(get_plotlyjs())
+            bundle_path.write_text(get_plotlyjs(), encoding="utf-8")
 
     # Handle auto_open
     if path is not None and full_html and auto_open: