pin grpcio

Author: kezhenxu94

Makefile

@@ -52,12 +52,12 @@ endif
 
 .PHONY: gen
 gen:
-	poetry run pip install grpcio-tools packaging
+	poetry run pip install grpcio-tools==1.68.0 packaging
 	poetry run python3 tools/grpc_code_gen.py
 
 .PHONY: gen-basic
 gen-basic:
-	python3 -m pip install grpcio-tools packaging
+	python3 -m pip install grpcio-tools==1.68.0 packaging
 	python3 tools/grpc_code_gen.py
 
 .PHONY: install