version bump for mobilebert

Summary: v3.34.0 include the patch that fixed the mobilebert export

Differential Revision: D49874303

Author: guangy10

install_requirements.sh

@@ -31,7 +31,7 @@ pip install --force-reinstall --pre torchaudio=="${TORCH_AUDIO_VERSION}" -i http
 TIMM_VERSION=0.6.13
 pip install --pre timm==${TIMM_VERSION}
 
-TRANSFORMERS_VERSION=4.31.0
+TRANSFORMERS_VERSION=4.34.0
 pip install --pre transformers==${TRANSFORMERS_VERSION}
 
 TORCHSR_VERSION=1.0.4