try to preserve the right comments

mzuenni · mpsijm · commit 718f123337e1 · 2025-03-05T15:44:00.000+01:00
diff --git a/bin/upgrade.py b/bin/upgrade.py
@@ -11,7 +11,8 @@
 
 
 # this is slow but tries to preserve the correct comments
-def _filter(data: CommentedMap, remove: str) -> None:
+def _filter(data: Any, remove: str) -> None:
+    assert isinstance(data, CommentedMap)
     prev = None
     for key in data:
         if key == remove:
