"For build to succeed one needs to install following packages:
protoc-gen-go with version v1.26 Download protobuf-all-[VERSION].tar.gz from [here](https://github.com/protocolbuffers/protobuf/releases)."
"here" has no 1.26.
There is a version 26 but it has no protoc-gen-go
in https://github.com/veraison/docs/blob/main/demo/cca/manual-end-to-end.md
"here" has no 1.26.
There is a version 26 but it has no protoc-gen-go
there is a protoc-gen-go over in https://github.com/golang/protobuf
But then there are instructions
But it's not clear in what component that should be done.