Update requirements.txt

requirements.txt

-transformers>=4.37.2
+transformers>=4.36.2,<4.39
 datasets>=2.14.3
 accelerate>=0.27.2
 peft>=0.10.0
@@ -15,4 +15,4 @@ sse-starlette
 matplotlib>=3.7.0
 fire
 packaging
-pyyaml
\ No newline at end of file
+pyyaml