update requirements.txt

requirements.txt

@@ -1,6 +1,7 @@
-torch==2.1.2
-transformers==4.37.2
-datasets==2.16.1
-accelerate==0.25.0
-safetensors==0.4.2
+torch~=2.1.2
+transformers~=4.37.2
+datasets~=2.16.1
+accelerate~=0.25.0
+safetensors~=0.4.2
+bitsandbytes~=0.42.0
 concept-guidance @ git+https://github.com/dvruette/concept-guidance.git