Add protobuf as MessageUtils dependency for cmake
Part of fixing Ph2_ACF#57 (closed)
Using this version with the current Dev of Ph2_ACF passes CI (checked in private fork as this needs MR in two repos).
Part of fixing Ph2_ACF#57 (closed)
Using this version with the current Dev of Ph2_ACF passes CI (checked in private fork as this needs MR in two repos).