[client-python] chore(deps): update actions/setup-python action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/setup-python	action	major	v5 → v6

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Release Notes

actions/setup-python (actions/setup-python)

v6

Compare Source

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Configuration

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.39%. Comparing base (5dd5796) to head (38b9d11).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #181   +/-   ##
=======================================
  Coverage   70.39%   70.39%           
=======================================
  Files          58       58           
  Lines        2327     2327           
=======================================
  Hits         1638     1638           
  Misses        689      689           

Flag	Coverage Δ
connectors	70.39% <ø> (ø)

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