chore: Log tasks with logger instead of Sentry

[gzurowski]

No need to notify about user tasks via Sentry. Instead, use a regular logger.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.45%. Comparing base (4eaf669) to head (12b6e99).

Files with missing lines	Patch %	Lines
src/user/tasks.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2657   +/-   ##
=======================================
  Coverage   75.45%   75.45%           
=======================================
  Files         477      477           
  Lines       25315    25313    -2     
=======================================
  Hits        19101    19101           
+ Misses       6214     6212    -2     

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