fix: Authentication Cookies follow redirects

[bednar]

Closes #302

Proposed Changes

The CookieContainer doesn't set Cookies if there is a redirect to other domain, we have to use custom Authenticator.

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• dotnet test completes successfully
• Commit messages are in semantic format
• Sign CLA (if not already signed)

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.34%. Comparing base (4fc6a85) to head (4e088dc).
⚠️ Report is 265 commits behind head on master.
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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #305      +/-   ##
==========================================
+ Coverage   88.32%   88.34%   +0.02%     
==========================================
  Files          74       74              
  Lines        6431     6446      +15     
==========================================
+ Hits         5680     5695      +15     
  Misses        751      751              

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