[tools] Update template pr github

[savacano28]

Proposed changes

• Add section: What should be tested and how?

Related issues

• Closes #ISSUE-NUMBER

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality
• For bug fix -> I implemented a test that covers the bug

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.02%. Comparing base (419b98d) to head (1aed7be).

Additional details and impacted files

@@                Coverage Diff                 @@
##             release/current    #3037   +/-   ##
==================================================
  Coverage              41.02%   41.02%           
  Complexity              2274     2274           
==================================================
  Files                    681      681           
  Lines                  20908    20908           
  Branches                1422     1422           
==================================================
  Hits                    8577     8577           
  Misses                 11849    11849           
  Partials                 482      482           

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[guillaumejparis]

LGTM maybe wait for somebody with abeeter English than me to check it ;)