refactor(templates): Use tox without installing Poetry explicitly in workflows

[edgarrmondragon]

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📚 Documentation preview 📚: https://meltano-sdk--2696.org.readthedocs.build/en/2696/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.50%. Comparing base (1442536) to head (1e423ac).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2696   +/-   ##
=======================================
  Coverage   90.50%   90.50%           
=======================================
  Files          62       62           
  Lines        4994     4994           
  Branches      974      974           
=======================================
  Hits         4520     4520           
  Misses        328      328           
  Partials      146      146           

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