upstream testing is failing due to changes made to dependency resolution/dockerfile in app cookie v2.3.1

[gsnider2195]

Upstream testing is missing the CI=true build arg and poetry lock is unable to resolve the Nautobot prerelease version when running from a branch.

Probably need to do these things:

• add the "Constrain Nautobot version" step to the plugin_upstream_testing_base.yml
• add ci=True to the build step of upstream testing
• Possibly update the _get_docker_nautobot_version or invoke lock --constrain_nautobot_ver to handle running from a branch

https://github.com/nautobot/nautobot-app-chatops/actions/runs/10868027086/job/30157480033

[gsnider2195]

https://github.com/nautobot/cookiecutter-nautobot-app/pull/170