fix: Missing keys in list_to_arrow_table

Signed-off-by: Anton Kukushkin <[email protected]>

Author: kukushking

awswrangler/_utils.py

@@ -898,7 +898,7 @@ def list_to_arrow_table(
     if not schema:
         names = []
         if mapping:
-            names = list(mapping[0].keys())
+            names = list({k for row in mapping for k in row.keys()})
         for n in names:
             v = [row[n] if n in row else None for row in mapping]
             arrays.append(v)