Add fields for user avatar in search methods

[dmitrymihalev]

PR checklist

• [*] I've written good commit message for all commits
• [*] I've split changes into separate commits where it's appropriate
• [*] I've added the description of function to documentation
• [*] I've updated project version in pyproject.toml
• [*] I'll make a release when PR is merged
• I'll bump pybotx in bot-template

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (0059a7b) to head (5c96882).

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #547   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          135       135           
  Lines         5085      5089    +4     
  Branches       214       214           
=========================================
+ Hits          5085      5089    +4     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.