fixed test_new_style_with_mixed_types_in_column added match to assert_produces_warning

Author: pedromfdiogo

pandas/tests/io/formats/test_to_csv.py

@@ -780,7 +780,9 @@ def test_new_style_with_mixed_types():
 
 def test_new_style_with_mixed_types_in_column():
     df = DataFrame({"A": [1.23, "text", 4.56]})
-    with tm.assert_produces_warning(UserWarning):
+    with tm.assert_produces_warning(
+        UserWarning, match="could not convert string to float"
+    ):
         result = df.to_csv(float_format="{:.2f}", lineterminator="\n")
 
     expected = ",A\n0,1.23\n1,text\n2,4.56\n"