fix import

Author: linoytsaban

examples/dreambooth/train_dreambooth_lora_hidream.py

@@ -42,7 +42,7 @@
 from torchvision import transforms
 from torchvision.transforms.functional import crop
 from tqdm.auto import tqdm
-from transformers import CLIPTokenizer, PretrainedConfig, T5TokenizerFast
+from transformers import CLIPTokenizer, PretrainedConfig, T5TokenizerFast, PreTrainedTokenizerFast
 
 import diffusers
 from diffusers import (