update_target_group

Update existing target group with new name and/or targeting criteria. Supports BOTH include AND exclude rules — including adding/removing exclude audiences.

**CRITICAL - PUT REQUEST**: You MUST provide ALL fields, not just changed ones.
- 'name' is ALWAYS REQUIRED even if not changing
- If updating targeting, provide complete targeting object (full include + exclude)
- Always retrieve current config first via retrieve_target_group_by_id and merge changes onto it

PREREQUISITE WORKFLOW:
1. list_target_groups(name="X") → get ID
2. retrieve_target_group_by_id(target_group_id=ID) → get current config, check isModifiable fields, copy existing exclude audiences
3. search_target_group_criteria → get new criteria IDs
4. estimate_target_group → MANDATORY: verify isMatchCountTooSmall=false
5. update_target_group with ID and ALL required fields (full targeting object)

MODIFIABILITY: Name always modifiable. LOCATION usually isModifiable=false. Check retrieve_target_group_by_id response for other fields.

TARGETING STRUCTURE: Same as create_target_group — full include array + single exclude object containing both `criteria` and `audiences`. See create_target_group description for the full example payload (with NATIVE_LOCATION, AGE, COMPANY_NAME exclude criteria, and FIRMOGRAPHIC_EXCLUDE audience). Only update criteria with isModifiable=true.

⚠️ AUDIENCES ≠ TARGET GROUPS. Both `include[].audiences` and `exclude.audiences` accept Custom Audience records ONLY (the entities returned by `get_matched_audiences`). Target Groups (the entities returned by `list_target_groups` / `retrieve_target_group_by_id`) are a separate entity in a separate ID space and CANNOT be attached here; the platform silently drops or rejects them. If the user names "X" and only `list_target_groups` matches it (not `get_matched_audiences`), do NOT pass the Target Group's id as `mdAudienceId`. Stop, tell the user "X is a Target Group, not a Custom Audience", and offer to rebuild X as a Custom Audience (e.g. via `create_audiences` with the same criteria) before retrying.

ADDING/REMOVING EXCLUDE AUDIENCES: Provide the COMPLETE desired `exclude.audiences` array. Each entry needs: `mdAudienceId` (integer, REQUIRED — the numeric Custom Audience id like 49067 from `get_matched_audiences`, NEVER the audience name string, NEVER a placeholder like 1/2/3/4 (rejected pre-flight), and NEVER a Target Group id from `list_target_groups`; see the AUDIENCES ≠ TARGET GROUPS note above), `name`, `type` (EXCLUDE variant like FIRMOGRAPHIC_EXCLUDE/RETARGETING_EXCLUDE/CONTACT_LIST_EXCLUDE), `matchCount`, `matchCountType`, `inactive`, and the audience's own `criteria` array. To remove an exclusion, omit it from the array. To add one, append it.

RESPONSE: {id, name, channel, audienceSize, status, modifiedDate, targeting}

VALIDATION: Must estimate first and verify isMatchCountTooSmall=false before updating.