chore(deps): update dependency pytest-asyncio to v0.20.1 (#513)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [pytest-asyncio](https://togithub.com/pytest-dev/pytest-asyncio) | `==0.19.0` -> `==0.20.1` | [![age](https://badges.renovateapi.com/packages/pypi/pytest-asyncio/0.20.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/pytest-asyncio/0.20.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/pytest-asyncio/0.20.1/compatibility-slim/0.19.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/pytest-asyncio/0.20.1/confidence-slim/0.19.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>pytest-dev/pytest-asyncio</summary>

### [`v0.20.1`](https://togithub.com/pytest-dev/pytest-asyncio/blob/HEAD/CHANGELOG.rst#&#8203;0201-22-10-21)

[Compare Source](https://togithub.com/pytest-dev/pytest-asyncio/compare/v0.20.0...v0.20.1)

\=================

-   Fixes an issue that warned about using an old version of pytest, even though the most recent version was installed. `#&#8203;430 <https://togithub.com/pytest-dev/pytest-asyncio/issues/430>`\_

### [`v0.20.0`](https://togithub.com/pytest-dev/pytest-asyncio/blob/HEAD/CHANGELOG.rst#&#8203;0200-22-10-21)

[Compare Source](https://togithub.com/pytest-dev/pytest-asyncio/compare/v0.19.0...v0.20.0)

\=================

-   BREAKING: Removed *legacy* mode. If you're upgrading from v0.19 and you haven't configured `asyncio_mode = legacy`, you can upgrade without taking any additional action. If you're upgrading from an earlier version or you have explicitly enabled *legacy* mode, you need to switch to *auto* or *strict* mode before upgrading to this version.
-   Deprecate use of pytest v6.
-   Fixed an issue which prevented fixture setup from being cached. `#&#8203;404 <https://togithub.com/pytest-dev/pytest-asyncio/pull/404>`\_

</details>

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requirements-test.txt

@@ -1,7 +1,7 @@
 pytest==7.1.3
 mock==4.0.3
 pytest-cov==4.0.0
-pytest-asyncio==0.19.0
+pytest-asyncio==0.20.1
 SQLAlchemy==1.4.42
 sqlalchemy-pytds==0.3.4
 flake8==5.0.4