build: pin Proto2TypeScript
build: pin Proto2TypeScript

They done broke the world in
https://github.com/SINTEF-9012/Proto2TypeScript/pull/13.

Closes ##8373.

cockroachdb/cockroach,paperstreet/cockroach,petermattis/cockroach,veteranlu/cockroach,petermattis/cockroach,veteranlu/cockroach,veteranlu/cockroach,paperstreet/cockroach,petermattis/cockroach,maxlang/cockroach,cockroachdb/cockroach,glycerine/cockroach,veteranlu/cockroach,petermattis/cockroach,petermattis/cockroach,paperstreet/cockroach,maxlang/cockroach,petermattis/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,paperstreet/cockroach,glycerine/cockroach,glycerine/cockroach,cockroachdb/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,maxlang/cockroach,petermattis/cockroach,maxlang/cockroach,paperstreet/cockroach,glycerine/cockroach,cockroachdb/cockroach,paperstreet/cockroach,vaibhavarora/cockroach,glycerine/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,maxlang/cockroach,cockroachdb/cockroach,maxlang/cockroach,veteranlu/cockroach,cockroachdb/cockroach,vaibhavarora/cockroach,glycerine/cockroach,maxlang/cockroach,veteranlu/cockroach,glycerine/cockroach,vaibhavarora/cockroach,glycerine/cockroach,cockroachdb/cockroach,petermattis/cockroach,maxlang/cockroach,cockroachdb/cockroach,paperstreet/cockroach