fix(deps): relax gcache prometheus and uvloop bounds

[lan17]

Summary

• relax prometheus-client from ^0.24.1 to >=0.22.1,<1.0.0
• relax uvloop from ^0.22.1 to >=0.21.0,<1.0.0
• refresh poetry.lock for the updated dependency metadata

Testing

• poetry lock
• poetry run pytest tests

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.47%. Comparing base (acc903f) to head (1b3eb53).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #124   +/-   ##
=======================================
  Coverage   97.47%   97.47%           
=======================================
  Files          13       13           
  Lines         673      673           
=======================================
  Hits          656      656           
  Misses         17       17           

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