Update app.py

app.py

@@ -1,4 +1,6 @@
 import os
+os.system('pip install pip --upgrade')
+os.system('pip install -q git+https://github.com/huggingface/transformers.git')
 os.system('pip install pyyaml==5.1')
 # workaround: install old version of pytorch since detectron2 hasn't released packages for pytorch 1.9 (issue: https://github.com/facebookresearch/detectron2/issues/3158)
 os.system('pip install torch==1.8.0+cu101 torchvision==0.9.0+cu101 -f https://download.pytorch.org/whl/torch_stable.html')