🌿 ✨ [Scheduled] Update API Spec (#133)

* feat: Update OpenAPI spec

* feat(openapi): add enterprise endpoints and schemas, azure transcriber support

* fix(fern/apis/api): update openapi.json to include security requirements and rename field

* chore(fern/apis/api/openapi.json): update Azure region names

* fix(openapi): update model and voiceId descriptions, add new fields and enums

* feat(openapi): add new OpenAI models and refactor server URL properties

* feat(openapi): add AzureSpeechTranscriber and new call end reasons

* feat(openapi): Add and remove properties in OpenAPI schema

This commit adds and removes properties in the OpenAPI schema for the following:
- `language` property in the `components/schemas/CreateCallInfoDTO` object
- `description` field in the `summaryPlan` object within `components/schemas/CreateCallInfoDTO`
- `llama-3.3-70b-versatile` model in the `enum` array within `components/schemas/Model`
- `squadId` and `server` properties in the `components/schemas/PhoneNumber` object
- `ChatServiceResponse` object type
- `AutoReloadPlan`, `Subscription`, and `HipaaBuyDTO` object types
- Removal of `CreateEnterpriseInfoDTO` and `EnterpriseInfo` object types

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Co-authored-by: fern-api[bot] <115122769+fern-api[bot]@users.noreply.github.com>

Author: fern-api[bot]