fix(webhooks): fix skipping webhooks calls on timeouts

[khvn26]

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Changes

Fixes #2500.

• Handle all HTTP errors, including timeouts
• Send the error name as part of failure email

How did you test this code?

Added a unit test.

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[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01 🎉

Comparison is base (d150c7f) 95.42% compared to head (bbbe261) 95.43%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2501      +/-   ##
==========================================
+ Coverage   95.42%   95.43%   +0.01%     
==========================================
  Files         963      963              
  Lines       27044    27061      +17     
==========================================
+ Hits        25807    25827      +20     
+ Misses       1237     1234       -3     

Impacted Files	Coverage Δ
api/webhooks/tests/test_webhooks.py	100.00% <100.00%> (ø)
api/webhooks/webhooks.py	95.12% <100.00%> (+3.65%)	⬆️

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