Update dependency uvloop to v0.21.0 (#58)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [uvloop](https://github.com/MagicStack/uvloop) | minor | `==0.20.0` -> `==0.21.0` |

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### Release Notes

<details>
<summary>MagicStack/uvloop (uvloop)</summary>

### [`v0.21.0`](https://github.com/MagicStack/uvloop/releases/tag/v0.21.0)

[Compare Source](https://github.com/MagicStack/uvloop/compare/v0.20.0...v0.21.0)

# Changes

-   Add cleanup_socket param on create_unix_server()
    ([#&#8203;623](https://github.com/MagicStack/uvloop/issues/623)) (by [@&#8203;fantix](https://github.com/fantix) in [`d6114d2`](https://github.com/MagicStack/uvloop/commit/d6114d2))

# Fixes

-   Use cythonized SO_REUSEPORT rather than the unwrapped native one. ([#&#8203;609](https://github.com/MagicStack/uvloop/issues/609))
    (by [@&#8203;ptribble](https://github.com/ptribble) in [`4083a94`](https://github.com/MagicStack/uvloop/commit/4083a94e) for [#&#8203;550](https://github.com/MagicStack/uvloop/issues/550))

-   UDP errors should result in protocol.error_received ([#&#8203;601](https://github.com/MagicStack/uvloop/issues/601))
    (by [@&#8203;jensbjorgensen](https://github.com/jensbjorgensen) in [`3c3bbef`](https://github.com/MagicStack/uvloop/commit/3c3bbeff))

-   Updates for Cython3 ([#&#8203;587](https://github.com/MagicStack/uvloop/issues/587))
    (by [@&#8203;alan-brooks](https://github.com/alan-brooks) in [`3fba9fa`](https://github.com/MagicStack/uvloop/commit/3fba9fab) for [#&#8203;587](https://github.com/MagicStack/uvloop/issues/587))

-   Test with Python 3.13 ([#&#8203;610](https://github.com/MagicStack/uvloop/issues/610))
    (by [@&#8203;edgarrmondragon](https://github.com/edgarrmondragon) in [`fb5a139`](https://github.com/MagicStack/uvloop/commit/fb5a139))

</details>

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Reviewed-on: #58
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requirements.txt

@@ -2,7 +2,7 @@ apscheduler~=3.10.4
 async_pymongo==0.1.9
 convopyro==0.5
 tgcrypto==1.2.5
-uvloop==0.20.0
+uvloop==0.21.0
 # If uses MongoDB:
 mongodb-migrations==1.3.1
 --extra-index-url https://git.end-play.xyz/api/packages/profitroll/pypi/simple