Update requirements.txt

requirements.txt

@@ -4,7 +4,5 @@ torch>=2.1.0
 pydub
 edge-tts
 aiofiles
-fitz  # May need to replace with PyMuPDF in some environments
-PyMuPDF>=1.23.7
-accelerate
-pypdf
+PyPDF2>=3.0.0          # or whatever the minimum PyPDF2 version you’ve tested with
+accelerate             # optional for multi-GPU / speedups