Pynautobot

What's Changed
* Update choices due to changed OPTIONS in Nautobot 2.0 https://github.com/nautobot/pynautobot/pull/134

**Full Changelog**: https://github.com/nautobot/pynautobot/compare/v1.5.0...v2.0.0

* updated `pynautobot.core.endpoint.Endpoint.choices()` to work with changed `OPTIONS` under `.schema.properties`

What's Changed
Tested against new Nautobot API. This is pre-release for Nautobot 2.0.0-rc.1

- (219) Replaced `pkg_resources` with `importlib.metadata` to enable Python 3.12 support.

- (206) Added python-pynautobot version to default headers.

What's Changed
* Fixes pynautobot for v1.6.16 auth changes by joewesch in https://github.com/nautobot/pynautobot/pull/174