Use DataFrame.map instead of DataFrame.applymap (#1613)

- Use `DataFrame.map` instead of `DataFrame.applymap`
- `DataFrame.applymap` has been deprecated.

Author: sooahleex

CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Enhancements
 - Support multiple labels for kaggle format
   (<https://github.com/openvinotoolkit/datumaro/pull/1607>)
+- Use DataFrame.map instead of DataFrame.applymap
+  (<https://github.com/openvinotoolkit/datumaro/pull/1613>)
 
 ### Bug fixes
 - Fix StreamDataset merging when importing in eager mode

src/datumaro/plugins/transforms.py

@@ -1957,7 +1957,7 @@ def refine_tabular_media(self, item):
             or item.media.table.dtype(col) is int
         ]
 
-        df[str_cols] = df[str_cols].applymap(lambda x: self.remove_unnecessary_char(x))
+        df[str_cols] = df[str_cols].map(lambda x: self.remove_unnecessary_char(x))
 
         if not (self._outlier_value):
             self.check_outlier(media.table.data[float_cols + int_cols], float_cols + int_cols)