add protobuf==3.20.0 to requirements

requirements.txt

@@ -18,6 +18,7 @@ omegaconf
 open-clip-torch
 
 piexif
+protobuf==3.20.0
 psutil
 pytorch_lightning
 requests

requirements_versions.txt

@@ -18,6 +18,7 @@ numpy==1.26.2
 omegaconf==2.2.3
 open-clip-torch==2.20.0
 piexif==1.1.3
+protobuf==3.20.0
 psutil==5.9.5
 pytorch_lightning==1.9.4
 resize-right==0.0.2