Transcribe an audio file with Universal-1 using Go

AssemblyAI has introduced a new speech model called Universal-1, which boasts near-human accuracy in speech-to-text transcription even with accented speech and background noise. It is significantly faster than the previous model, Conformer-2, and supports English, Spanish, French, and German, with more languages to be added soon. Alongside this new model, two new pricing tiers have been introduced: Best for applications where accuracy is paramount, and Nano as a cost-effective option supporting 99 different languages. The AssemblyAI Go SDK can be used to transcribe audio files in Go applications using Universal-1 and Nano.