Increasing epsilon for steth markets in long short maturity val test

[slundqui]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.06%. Comparing base (2487d5d) to head (7d57e67).
Report is 107 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1575      +/-   ##
==========================================
+ Coverage   82.03%   82.06%   +0.02%     
==========================================
  Files          98       98              
  Lines        7232     7232              
==========================================
+ Hits         5933     5935       +2     
+ Misses       1299     1297       -2     

Flag	Coverage Δ
unittests	82.06% <ø> (+0.02%)	⬆️

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