Fix: Pin setuptools<82 for pkg_resources compatibility

setuptools 82.0.0 removed pkg_resources, which plugin.py imports
for entry point discovery and plugin verification.

This is a minimal fix for the 0.14.x maintenance line.
DataJoint 2.x uses importlib.metadata instead.

Fixes #1394

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: dimitri-yatsenko

datajoint/plugin.py

@@ -1,7 +1,7 @@
 import logging
 from pathlib import Path
 
-import pkg_resources
+import pkg_resources  # requires setuptools<82
 from cryptography.exceptions import InvalidSignature
 from otumat import hash_pkg, verify
 

pyproject.toml

@@ -22,7 +22,7 @@ dependencies = [
   "faker",
   "cryptography",
   "urllib3",
-  "setuptools",
+  "setuptools<82",  # pkg_resources removed in 82.0.0
 ]
 requires-python = ">=3.9,<4.0"
 authors = [