No security check for id_from_image_name (#1642)

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### Summary
Ignore bandit error B311 in 'id_from_image_name' transform.

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src/datumaro/plugins/transforms.py

@@ -661,7 +661,9 @@ def __init__(self, extractor, ensure_unique: bool = False, suffix_length: int =
     def _add_unique_suffix(self, name):
         count = 0
         while name in self._names:
-            suffix = "".join(random.choices(self.SUFFIX_LETTERS, k=self._suffix_length))
+            suffix = "".join(
+                random.choices(self.SUFFIX_LETTERS, k=self._suffix_length)
+            )  # nosec B311
             new_name = f"{name}__{suffix}"
             if new_name not in self._names:
                 name = new_name