Changes to update voice

added the non-success response with the status 503

added the new eleven_v4 enum value to the request property providerModelId

added the new eleven_v4_turbo enum value to the request property providerModelId

removed the OPENAI_ADVANCED_VOICE enum value from the provider response property for the response status 200

added the new sonic-3.6-2026-08-27 enum value to the request property providerModelId

added the new eleven_v3 enum value to the request property providerModelId

added the new eleven_v3_conversational enum value to the request property providerModelId

request property providerModelId was restricted to a list of enum values

added the new eleven_flash_v2 enum value to the request property providerModelId

added the new eleven_flash_v2_5 enum value to the request property providerModelId

added the new eleven_multilingual_v2 enum value to the request property providerModelId

added the new eleven_turbo_v2_5 enum value to the request property providerModelId

added the new s1 enum value to the request property providerModelId

added the new s2-pro enum value to the request property providerModelId

added the new s2.1-pro enum value to the request property providerModelId

added the new sonic-2 enum value to the request property providerModelId

added the new sonic-3 enum value to the request property providerModelId

added the new sonic-3-2026-01-12 enum value to the request property providerModelId

added the new sonic-3.5 enum value to the request property providerModelId

added the new sonic-3.5-2026-05-04 enum value to the request property providerModelId

added the new sonic-3.6 enum value to the request property providerModelId

added the new sonic-latest enum value to the request property providerModelId

added the non-success response with the status 429

added the non-success response with the status 502

added the non-success response with the status 504

added the non-success response with the status 403