Update OTel hook with additional attributes

[sahidvelji]

It doesn't need to be in this PR but we did define more attributes that can be included in the span event. There's already in a method in the SDK that creates this event based on the spec. We would just need to update the min SDK version to use this in the hook.

https://openfeature.dev/specification/appendix-d

Originally posted by @beeme1mr in https://github.com/open-feature/go-sdk-contrib/pull/713#pullrequestreview-2958995570