Increasing epsilon for steth markets in long short maturity val test

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.06%. Comparing base (2487d5d) to head (7d57e67).

Additional details and impacted files

```diff @@ 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](https://app.codecov.io/gh/delvtech/agent0/pull/1575/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/delvtech/agent0/pull/1575/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech) | `82.06% <ø> (+0.02%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech#carryforward-flags-in-the-pull-request-comment) to find out more.

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