fix(eventually-postgres): flaky integration test for event_store.rs

[ar3s3ru]

• fix(event): remove trailing parenthesis from AppendError
• fix(tests/event_store): use if-let-else for result assertion in case of concurrency

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.09 ⚠️

Comparison is base (aa48949) 87.83% compared to head (1d0ce39) 87.74%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #251      +/-   ##
==========================================
- Coverage   87.83%   87.74%   -0.09%     
==========================================
  Files          18       18              
  Lines        1159     1159              
==========================================
- Hits         1018     1017       -1     
- Misses        141      142       +1     

Impacted Files	Coverage Δ
eventually-postgres/src/event.rs	96.13% <ø> (-0.56%)	⬇️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.