v1.41.0

What's Changed

Improve jsonschema test coverage by @sashabaranov in https://github.com/sashabaranov/go-openai/pull/1040
Increase files.go test coverage by @sashabaranov in https://github.com/sashabaranov/go-openai/pull/1041
Enable Go 1.18 compatibility check by @sashabaranov in https://github.com/sashabaranov/go-openai/pull/1042
Support for extra_body parameter for embeddings API by @AyushSawant18588 in https://github.com/sashabaranov/go-openai/pull/906
Increase jsonschema test coverage by @sashabaranov in https://github.com/sashabaranov/go-openai/pull/1043
Add tests for internal utilities by @sashabaranov in https://github.com/sashabaranov/go-openai/pull/1044
Add GuidedChoice to ChatCompletionRequest by @AyushSawant18588 in https://github.com/sashabaranov/go-openai/pull/1034
fix(chat): shorten comment to pass linter by @sashabaranov in https://github.com/sashabaranov/go-openai/pull/1050
add GPT-5 model constants and reasoning validation by @behzadsp in https://github.com/sashabaranov/go-openai/pull/1062

@behzadsp made their first contribution in https://github.com/sashabaranov/go-openai/pull/1062

Full Changelog: https://github.com/sashabaranov/go-openai/compare/v1.40.5...v1.41.0