prompt_tokens_details not there in latest openai specs

[digantvsingh]

Completion Usage is now returning prompt_tokens_details as well which is not available in openapi specs

"usage": { "prompt_tokens": 38, "completion_tokens": 16, "total_tokens": 54, "prompt_tokens_details": { "cached_tokens": 0 }, "completion_tokens_details": { "reasoning_tokens": 0 }