ci: update PR template to use tox commands

[mr-cal]

• Have you followed the guidelines for contributing?
• Have you signed the CLA?
• Have you successfully run make lint?
• Have you successfully run pytest tests/unit?

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Update the PR template to use tox commands.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7b42a3d) 89.22% compared to head (a7d3dd0) 89.22%.

❗ Current head a7d3dd0 differs from pull request most recent head 74e4b27. Consider uploading reports for the commit 74e4b27 to get more accurate results

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4507   +/-   ##
=======================================
  Coverage   89.22%   89.22%           
=======================================
  Files         322      322           
  Lines       21808    21808           
=======================================
  Hits        19458    19458           
  Misses       2350     2350           

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