Add log message when DedupeIntegration is dropping an error.

[antonpirker]

Make it clearer for the user what is happening.

resolves: PY-1840

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.58%. Comparing base (94a92d8) to head (189db0f).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4788      +/-   ##
==========================================
+ Coverage   84.55%   84.58%   +0.03%     
==========================================
  Files         158      158              
  Lines       16479    16480       +1     
  Branches     2855     2855              
==========================================
+ Hits        13933    13939       +6     
+ Misses       1700     1695       -5     
  Partials      846      846              

Files with missing lines	Coverage Δ
sentry_sdk/integrations/dedupe.py	87.87% <100.00%> (+0.37%)	⬆️

... and 2 files with indirect coverage changes

[linear]

PY-1840 Investigate lost events in Dropbox integration with Sentry