Ignore error when changing log folder permissions (apache#30123)

In some circumstances, changing the permission of a parent folder
for the log might not be possible - for example when it was
created by another user (with impersonation) or when the filesystem
does not allow for permission change.

Fixes: apache#29112

airflow/utils/log/file_task_handler.py

@@ -441,8 +441,16 @@ def _prepare_log_folder(self, directory: Path):
         )
         directory.mkdir(mode=new_folder_permissions, parents=True, exist_ok=True)
         if directory.stat().st_mode % 0o1000 != new_folder_permissions % 0o1000:
-            print(f"Changing dir permission to {new_folder_permissions}")
-            directory.chmod(new_folder_permissions)
+            print(f"Changing {directory} permission to {new_folder_permissions}")
+            try:
+                directory.chmod(new_folder_permissions)
+            except PermissionError as e:
+                # In some circumstances (depends on user and filesystem) we might not be able to
+                # change the permission for the folder (when the folder was created by another user
+                # before or when the filesystem does not allow to change permission). We should not
+                # fail in this case but rather ignore it.
+                print(f"Failed to change {directory} permission to {new_folder_permissions}: {e}")
+                pass
 
     def _init_file(self, ti):
         """