fix: do not close redis

[Krukov]

Fix for https://github.com/Krukov/cashews/issues/209

[codecov-commenter]

Codecov Report

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

Project coverage is 93.88%. Comparing base (f30be88) to head (8395c97).

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #216 +/- ## ======================================= Coverage 93.88% 93.88% ======================================= Files 54 54 Lines 3482 3483 +1 Branches 601 602 +1 ======================================= + Hits 3269 3270 +1 Misses 106 106 Partials 107 107 ``` | [Flag](https://app.codecov.io/gh/Krukov/cashews/pull/216/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Krukov+D) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/Krukov/cashews/pull/216/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Krukov+D) | `93.76% <100.00%> (+<0.01%)` | :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=Krukov+D#carryforward-flags-in-the-pull-request-comment) to find out more.

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