Harden required phrase model training

Signed-off-by: Kaushik Kumar <kaushikrjpm10@gmail.com>

Author: Kaushik-Kumar-CEG

etc/requirements-ml.txt

@@ -2,11 +2,12 @@
 # Install with: pip install -r etc/requirements-ml.txt
 
 torch>=2.0
-transformers>=4.44
+transformers==4.57.3
+huggingface-hub==0.36.2
 sentencepiece>=0.2
 protobuf>=3.20
 accelerate>=0.33
-pytorch-crf>=0.7.2
+pytorch-crf==0.7.2
 safetensors>=0.4
 
 # Used explicitly for DeBERTa-large training on a 16 GB GPU.