CI: Migrate oc.unit:proto-x86_64 and oc.unit:protocol_compiles to gcp_very_high_cpu to fix the OOMs
Problem
CI jobs oc.unit:proto-x86_64 and oc.unit:protocol_compiles are experiencing Out-of-Memory (OOM) errors since !16340 (merged).
Solution
Run these jobs with the gcp_very_high_cpu tag to provide more resources, using regenerated pipelines from CIAO.