[#1274] Downgraded ZGW role-retrieval's error-level in notification handler for less Sentry spam

[Bartvaderkin]

No description provided.

[codecov-commenter]

Codecov Report

Merging #559 (78db5ce) into develop (6eed780) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #559   +/-   ##
========================================
  Coverage    96.47%   96.47%           
========================================
  Files          543      543           
  Lines        19374    19374           
========================================
  Hits         18692    18692           
  Misses         682      682           

Impacted Files	Coverage Δ
src/open_inwoner/openzaak/notifications.py	95.12% <ø> (ø)
...penzaak/tests/test_notification_zaak_infoobject.py	100.00% <ø> (ø)
...er/openzaak/tests/test_notification_zaak_status.py	100.00% <ø> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[alextreme]

Can be merged