feat: update bitgo-api-docs

This commit updates the BitGo API.

Author: dev-portal-updater-unprotected[bot]

api.yaml

@@ -65317,6 +65317,7 @@ x-tagGroups:
       - Reports
       - Send label
       - Solvency
+      - Stablecoin
       - Staking Request
       - Staking State Information
       - Staking History