Add python-dotenv to requirements

requirements.txt

@@ -1,28 +1,10 @@
-# Core dependencies
-gradio>=4.0.0
 transformers>=4.39.0
 torch>=2.0.0
 accelerate>=0.27.2
 safetensors>=0.4.2
 sentencepiece>=0.1.99
-
-# Model dependencies
 einops>=0.7.0
 scipy>=1.11.0
-
-# Hugging Face
 huggingface-hub>=0.20.3
 spaces>=0.19.4
-
-# Utilities
 python-dotenv>=1.0.0
-pydantic>=2.4.2
-numpy<2.0.0
-tqdm>=4.66.0
-requests>=2.31.0
-
-# Memory optimization
-psutil>=5.9.0
-
-# For Gemma model
-google-cloud-aiplatform>=1.36.4