[CFX-1605] DR AF Provider - Remove declared python 3.13 support

[c-h-russell-walker]

This repository is public. Do not put here any private DataRobot or customer's data: code, datasets, model artifacts, .etc.

Summary

Trying to pip install our package in a 3.13 virtual env fails:
Collecting google-re2>=1.0 (from apache-airflow>=2.6.0->airflow-provider-datarobot)

Rationale

Looks like there's a known issue here:
google/re2#516

And also apache-airflow only declares support up to 3.12:
https://pypi.org/project/apache-airflow/

[devexp-slackbot]

The Needs Review labels were added based on the following file changes.

Team @datarobot/machine-learning-development (#machine-learning-dev) was assigned because of changes in files:

setup.py
setup_early_access.py

If you think that there are some issues with ownership, please discuss with C&A domain at #sdtk slack channel and create PR to update DRCODEOWNERS\CODEOWNERS file.

[mjnitz02]

Thanks for catching this. Yea, we don't have grid unit testing for 3.13 yet, so this was added by mistake.

[c-h-russell-walker]

Thanks for catching this. Yea, we don't have grid unit testing for 3.13 yet, so this was added by mistake.

Credit's due to @vivekrohillaDRB for finding the issue 😎