fix: flaky fuzz test errors

[jescalada]

Fixes #1155 and other issues with flaky tests.

Adds the validator library to check that emails have a valid format.

[netlify]

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🔨 Latest commit	802ba27
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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.80%. Comparing base (9679618) to head (802ba27).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1158      +/-   ##
==========================================
- Coverage   82.81%   82.80%   -0.01%     
==========================================
  Files          66       66              
  Lines        2787     2786       -1     
  Branches      335      334       -1     
==========================================
- Hits         2308     2307       -1     
  Misses        432      432              
  Partials       47       47              

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[jescalada]

Note: #1162 should be merged first as it has a fix for the proxyUrl test failure!

[kriswest]

This improves the situation and git-proxy's validation of emails. Approving on that basis.

However, I don't think it fully solves the flakiness in checkAuthorEmails, but will reduce the incidence rate by an order of magnitude.

To fully resolve you'd need to check if the string is an email (use the validator and flip the expect) or prevent it ever being one (e.g. by removing @ symbols or add something if one exists that guarantees it doesn't validate).