Added logging for certificate verification when linked and added testing

[janssensjelle]

Types of changes

What types of changes does your code introduce?
Put an x in the boxes that apply.

• Bugfix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality not to work as expected).
• Documentation Update (if none of the other choices applies).

Proposed changes

Sends a message to the verification channel of saying which user used which cert id

Checklist

Put an x in the boxes that apply.

• I have read and followed the CONTRIBUTING.md
  doc.
• Lint and unit tests pass locally with my changes.
• I have added the necessary documentation (if appropriate).

Additional context

Add any other context or screenshots here.

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 62.13%. Comparing base (0f08c66) to head (7874bdc).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
src/webhooks/handlers/academy.py	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #178      +/-   ##
==========================================
+ Coverage   61.74%   62.13%   +0.39%     
==========================================
  Files          50       50              
  Lines        2941     2945       +4     
==========================================
+ Hits         1816     1830      +14     
+ Misses       1125     1115      -10     

☔ View full report in Codecov by Sentry.
📢 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.