fix: pin setuptools<82 to avoid pkg_resources issue

[tazlin]

This should address the CI failing for the related reason:

Traceback (most recent call last):
  File "/home/runner/work/AI-Horde/AI-Horde/server.py", line 18, in <module>
    from horde.argparser import args
  File "/home/runner/work/AI-Horde/AI-Horde/horde/__init__.py", line 12, in <module>
    import horde.routes  # noqa F401
  File "/home/runner/work/AI-Horde/AI-Horde/horde/routes.py", line 24, in <module>
    from horde.database import functions as database
  File "/home/runner/work/AI-Horde/AI-Horde/horde/database/__init__.py", line 5, in <module>
    import horde.database.threads as threads
  File "/home/runner/work/AI-Horde/AI-Horde/horde/database/threads.py", line 9, in <module>
    import patreon
  File "/opt/hostedtoolcache/Python/3.10.20/x64/lib/python3.10/site-packages/patreon/__init__.py", line 1, in <module>
    from .api import API
  File "/opt/hostedtoolcache/Python/3.10.20/x64/lib/python3.10/site-packages/patreon/api.py", line 10, in <module>
    from patreon.utils import user_agent_string
  File "/opt/hostedtoolcache/Python/3.10.20/x64/lib/python3.10/site-packages/patreon/utils.py", line 1, in <module>
    import pkg_resources
ModuleNotFoundError: No module named 'pkg_resources'