go.mod: upgrade tnet version to handle negative idle timeout

Codecov Report

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

Project coverage is 85.95355%. Comparing base (c8cb302) to head (c4dbfeb).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #169 +/- ## =================================================== - Coverage 86.08802% 85.95355% -0.13447% =================================================== Files 190 190 Lines 16360 16360 =================================================== - Hits 14084 14062 -22 - Misses 1719 1733 +14 - Partials 557 565 +8 ``` | [Flag](https://app.codecov.io/gh/trpc-group/trpc-go/pull/169/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=trpc-group) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/trpc-group/trpc-go/pull/169/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=trpc-group) | `85.95355% <ø> (-0.13447%)` | :arrow_down: | 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=trpc-group#carryforward-flags-in-the-pull-request-comment) to find out more.

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trpc-group / trpc-go

go.mod: upgrade tnet version to handle negative idle timeout #169

Codecov Report