[poetry] Update Lockfile

[linkml-pr-bot]

Update poetry dependencies:

Current	Updated
linkml-runtime 1.8.2	linkml-runtime 1.8.3
rich 13.8.1	rich 13.9.2
tox 4.20.0	tox 4.21.2
types-python-dateutil 2.9.0.20240906	types-python-dateutil 2.9.0.20241003

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.84%. Comparing base (68a880a) to head (76300c2).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2355   +/-   ##
=======================================
  Coverage   80.84%   80.84%           
=======================================
  Files         118      118           
  Lines       13127    13127           
  Branches     3710     3710           
=======================================
  Hits        10613    10613           
  Misses       1905     1905           
  Partials      609      609           

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