fix: more specific exceptions for jira labelling

[nedbat]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (bb40e4d) 89.87% compared to head (d28c579) 89.91%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #272      +/-   ##
==========================================
+ Coverage   89.87%   89.91%   +0.04%     
==========================================
  Files          38       38              
  Lines        2804     2817      +13     
  Branches      388      389       +1     
==========================================
+ Hits         2520     2533      +13     
  Misses        259      259              
  Partials       25       25              

Files	Coverage Δ
openedx_webhooks/info.py	98.67% <100.00%> (+0.05%)	⬆️
tests/fake_jira.py	93.67% <100.00%> (ø)
tests/test_pull_request_opened.py	100.00% <100.00%> (ø)

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