SNOW-950923 Flaky test fix

[sfc-gh-mhofman]

Description

Timeout delta increased to verify Login Request Timeout falls into expected range.

Checklist

• Code compiles correctly
• Code is formatted according to Coding Conventions
• Created tests which fail without the change (if possible)
• All tests passing (dotnet test)
• Extended the README / documentation, if necessary
• Provide JIRA issue id (if possible) or GitHub issue id in PR name

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9d61e81) 84.35% compared to head (12c70e9) 84.21%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #870      +/-   ##
==========================================
- Coverage   84.35%   84.21%   -0.14%     
==========================================
  Files          88       88              
  Lines        9336     9387      +51     
  Branches      874      883       +9     
==========================================
+ Hits         7875     7905      +30     
- Misses       1235     1251      +16     
- Partials      226      231       +5     

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