Relax protobuf version pin in grr-response-proto.
@@ -17,7 +17,7 @@ THIS_DIRECTORY = os.path.dirname(os.path.realpath(__file__))
os.chdir(THIS_DIRECTORY)
GRPCIO_TOOLS = "grpcio-tools==1.29.0"
-PROTOBUF = "protobuf==3.12.2"
+PROTOBUF = "protobuf>=3.12.2,<4"
def get_config():
