Add the missing models (Sonnet Sonnet 4.6 and Opus) to Vault

GitLab Infrastructure Service - incident.io
2026-03-31T21:04:27Z

We need to add the missing models (Sonnet Sonnet 4.6 and Opus 4.6) to `AIGW_MODEL_ENGINE_LIMITS` in  https://vault.gitlab.net/ui/vault/secrets/runway/kv/env%2Fproduction%2Fservice%2Fai-gateway%2FAIGW_MODEL_ENGINE_LIMITS/details?version=8