Add setuptools to install_requires for pkg_resources compatibility

[bob-autoidm]

Modern Python (3.12+) no longer bundles setuptools, and setuptools>=82 removed pkg_resources entirely. The pytz dependency (pinned at 2018.4 via singer-python) uses pkg_resources as a fallback for timezone data loading, causing 'pkg_resources not found' errors in modern environments.

Adding setuptools as an explicit dependency ensures pkg_resources remains available.

Fixes FreshDesk #945.

---

Note

Low Risk
Low risk dependency-only change; main impact is packaging/runtime environment compatibility and potential version conflicts with downstream tooling.

Overview
Adds setuptools to install_requires in setup.py so the package explicitly pulls in setuptools at runtime (improving compatibility in environments where it’s no longer bundled).

^{Written by Cursor Bugbot for commit 1b935a8. This will update automatically on new commits. Configure here.}

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

[cursor]

Unpinned setuptools allows versions without pkg_resources

High Severity

The PR description states that setuptools>=82 removed pkg_resources entirely, yet setuptools is added here without an upper version bound. This means pip can resolve to setuptools 82+, which no longer includes pkg_resources, completely defeating the purpose of this fix. The dependency needs an upper bound (e.g., setuptools<82) to guarantee pkg_resources remains available.