Update requirements.txt

LLaMA-Factory/requirements.txt

-transformers>=4.41.2
-datasets>=2.16.0
-accelerate>=0.30.1
-peft>=0.11.1
+transformers==4.41.2
+datasets==2.18.0
+accelerate==0.30.1
+peft==0.12.0
 trl>=0.8.6
-gradio>=4.0.0
-pandas>=2.0.0
+gradio==4.14.0
+pandas==2.2.2
 scipy
 einops
 sentencepiece