chore(deps): update docs/requirements.txt (#116)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [mkdocs](https://togithub.com/mkdocs/mkdocs)
([changelog](https://www.mkdocs.org/about/release-notes/)) | `==1.4.2`
-> `==1.4.3` |
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|
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|
[![passing](https://badges.renovateapi.com/packages/pypi/mkdocs/1.4.3/compatibility-slim/1.4.2)](https://docs.renovatebot.com/merge-confidence/)
|
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|
| [mkdocstrings](https://togithub.com/mkdocstrings/mkdocstrings)
([changelog](https://mkdocstrings.github.io/changelog)) | `==0.21.2` ->
`==0.22.0` |
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|
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|

---

### Release Notes

<details>
<summary>mkdocs/mkdocs</summary>

### [`v1.4.3`](https://togithub.com/mkdocs/mkdocs/releases/tag/1.4.3)

[Compare
Source](https://togithub.com/mkdocs/mkdocs/compare/1.4.2...1.4.3)

- Bugfix: for the `hooks` feature, modules no longer fail to load if
using some advanced Python features like dataclasses
([#&#8203;3193](https://togithub.com/mkdocs/mkdocs/issues/3193))

- Bugfix: Don't create `None` sitemap entries if the page has no
populated URL - affects sites that exclude some files from navigation
([`07a297b`](https://togithub.com/mkdocs/mkdocs/commit/07a297b3b4de4a1b49469b1497ee34039b9f38fa))

-   "readthedocs" theme:
- Accessibility: add aria labels to Home logo
([#&#8203;3129](https://togithub.com/mkdocs/mkdocs/issues/3129)) and
search inputs
([#&#8203;3046](https://togithub.com/mkdocs/mkdocs/issues/3046))
- "readthedocs" theme now supports `hljs_style:` config, same as
"mkdocs" theme
([#&#8203;3199](https://togithub.com/mkdocs/mkdocs/issues/3199))

-   Translations:
- Built-in themes now also support Indonesian language
([#&#8203;3154](https://togithub.com/mkdocs/mkdocs/issues/3154))
- Fixed `zh_CN` translation
([#&#8203;3125](https://togithub.com/mkdocs/mkdocs/issues/3125))
- `tr_TR` translation becomes just `tr` - usage should remain unaffected
([#&#8203;3195](https://togithub.com/mkdocs/mkdocs/issues/3195))

See [commit
log](https://togithub.com/mkdocs/mkdocs/compare/1.4.2...1.4.3).

</details>

<details>
<summary>mkdocstrings/mkdocstrings</summary>

###
[`v0.22.0`](https://togithub.com/mkdocstrings/mkdocstrings/blob/HEAD/CHANGELOG.md#&#8203;0220-httpsgithubcommkdocstringsmkdocstringsreleasestag0220---2023-05-25)

[Compare
Source](https://togithub.com/mkdocstrings/mkdocstrings/compare/0.21.2...0.22.0)

<small>[Compare with
0.21.2](https://togithub.com/mkdocstrings/mkdocstrings/compare/0.21.2...0.22.0)</small>

##### Features

- Allow extensions to add templates
([cf0af05](https://togithub.com/mkdocstrings/mkdocstrings/commit/cf0af059eb89240eba0437de417c124389e2f20e)
by Timothée Mazzucotelli). [PR
#&#8203;569](https://togithub.com/mkdocstrings/mkdocstrings/pull/569)

##### Code Refactoring

- Report inventory loading errors
([2c05d78](https://togithub.com/mkdocstrings/mkdocstrings/commit/2c05d7854b87251e26c1a2e1810b85702ff110f3)
by Timothée Mazzucotelli). Co-authored-by: Oleh Prypin <oleh@pryp.in>

</details>

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docs/requirements.txt

@@ -1,6 +1,6 @@
-mkdocs==1.4.2
+mkdocs==1.4.3
 mkdocs-material
-mkdocstrings[python]==0.21.2
+mkdocstrings[python]==0.22.0
 mkdocs-include-markdown-plugin
 pygments
 pymdown-extensions==9.11