Work around for grpc

Author: marcalff

ci/setup_grpc.sh

@@ -124,6 +124,7 @@ GRPC_BUILD_OPTIONS=(
     -DCMAKE_CXX_STANDARD=${std_version}
     -DCMAKE_CXX_STANDARD_REQUIRED=ON
     -DCMAKE_CXX_EXTENSIONS=OFF
+    -DCMAKE_POLICY_VERSION_MINIMUM=3.5
     -DgRPC_BUILD_TESTS=OFF
     -DgRPC_BUILD_GRPC_CPP_PLUGIN=ON
     -DgRPC_BUILD_GRPC_CSHARP_PLUGIN=OFF