update proto version installed in install_protoc.sh.

PiperOrigin-RevId: 523952220

Author: pierrot0

tensorflow_datasets/core/proto/install_protoc.sh

@@ -2,10 +2,10 @@
 # Install the .protoc compiler on Linux
 
 # Make sure you grab the latest version
-curl -OL https://github.com/google/protobuf/releases/download/v3.11.2/protoc-3.11.2-linux-x86_64.zip
+curl -OL https://github.com/google/protobuf/releases/download/v3.20.0/protoc-3.20.0-linux-x86_64.zip
 
 # Unzip
-unzip protoc-3.11.2-linux-x86_64.zip -d protoc3
+unzip protoc-3.20.0-linux-x86_64.zip -d protoc3
 
 
 # Move protoc to /usr/local/bin/