fix: Strapi user relations

[mateusz-kleszcz]

Ticket

#333

Summary

PR ensures that Strapi users are related to the User collection from plugin::users-permissions.user. This way, the username, email, and avatar should be connected to the User data, and in the case of an update, they should be populated in the comment data.

Test Plan

• Test all endpoints for the Strapi and Non-Strapi users, see if Avatars are populated correctly.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.78%. Comparing base (51ec01e) to head (286a60e).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #340      +/-   ##
==========================================
+ Coverage   90.59%   90.78%   +0.19%     
==========================================
  Files          37       37              
  Lines         978      977       -1     
  Branches      237      237              
==========================================
+ Hits          886      887       +1     
+ Misses         91       89       -2     
  Partials        1        1              

Flag	Coverage Δ
unittest	90.78% <100.00%> (+0.19%)	⬆️

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