refactor: Use Client.session attribute where possible

[edgarrmondragon]

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📚 Documentation preview 📚: https://citric--921.org.readthedocs.build/en/921/

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0 Bugs
0 Vulnerabilities
0 Security Hotspots
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No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (c886663) 100.00% compared to head (2eae3ae) 100.00%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #921   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files            8         8           
  Lines          403       403           
  Branches        23        23           
=========================================
  Hits           403       403           

Files Changed	Coverage Δ
src/citric/client.py	100.00% <100.00%> (ø)

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