Drop async_timeout on py<3.11

[bdraco]

We can drop the async-timeout dep on py3.11+

There was one still left in zeroconf, but it is now switched out

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.01% :warning:

Comparison is base (f0b6db7) 67.88% compared to head (ec6ad1f) 67.87%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #330 +/- ## ========================================== - Coverage 67.88% 67.87% -0.01% ========================================== Files 71 71 Lines 6775 6774 -1 ========================================== - Hits 4599 4598 -1 Misses 2176 2176 ``` | [Files Changed](https://app.codecov.io/gh/Jc2k/aiohomekit/pull/330?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | Coverage Δ | | |---|---|---| | [aiohomekit/zeroconf.py](https://app.codecov.io/gh/Jc2k/aiohomekit/pull/330?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-YWlvaG9tZWtpdC96ZXJvY29uZi5weQ==) | `68.39% <100.00%> (-0.17%)` | :arrow_down: |

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[bdraco]

thanks