Updates any subset of name, description, or terms. Passing terms replaces the whole list — there is no incremental add/remove. If the dictionary is attached to any agent and the new char_count would push that agent over 10,000 combined characters, the request fails with DICTIONARY_CHAR_LIMIT_EXCEEDED.
API key in format: rg_live_xxxx. Pass as a Bearer token in the Authorization header.
Dictionary ID.