Transcribe fails when AWS account has enabled AI services opt-out

[ianwow]

Describe the bug

Transcribe fails when AWS account has enabled the following opt-out:

https://docs.aws.amazon.com/organizations/latest/userguide/orgs_manage_policies_ai-opt-out.html

start_transcribe.py line 162

throws this error:

'An error occurred (BadRequestException) when calling the StartTranscriptionJob operation: You must specify a value for outputBucketName because your account, XXXXXXXXXXXXX, has opted out of using your content for quality improvements. Make sure you provide a value for outputBucketName and try your request again.'

[ianwow]