Fix diff print

Author: datapythonista

scripts/validate_min_versions_in_sync.py

@@ -74,11 +74,11 @@ def pin_min_versions_to_ci_deps() -> int:
             yaml_map, toml_map, yaml_start_data
         )
         if yaml_result_data != yaml_start_data:
-            sys.stderr.write(difflib.unified_diff(
-                                       yaml_start_data,
-                                       yaml_result_data,
-                                       fromfile=curr_file,
-                                       tofile="edited"))
+            sys.stderr.write("\n".join(list(difflib.unified_diff(
+                yaml_start_data,
+                yaml_result_data,
+                fromfile=curr_file,
+                tofile="edited"))))
             with open(curr_file, "w", encoding="utf-8") as f:
                 f.write(yaml_result_data)
             ret |= 1