Bump mkdocstrings[python] from 0.20.0 to 0.21.1 (#308)

Bumps
[mkdocstrings[python]](https://github.com/mkdocstrings/mkdocstrings)
from 0.20.0 to 0.21.1.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/mkdocstrings/mkdocstrings/blob/master/CHANGELOG.md">mkdocstrings[python]'s
changelog</a>.</em></p>
<blockquote>
<h2><a
href="https://github.com/mkdocstrings/mkdocstrings/releases/tag/0.21.1">0.21.1</a>
- 2023-04-05</h2>
<p><!-- raw HTML omitted --><a
href="https://github.com/mkdocstrings/mkdocstrings/compare/0.21.0...0.21.1">Compare
with 0.21.0</a><!-- raw HTML omitted --></p>
<h3>Bug Fixes</h3>
<ul>
<li>Fix missing typing-extensions dependency on Python less than 3.10
(<a
href="https://github.com/mkdocstrings/mkdocstrings/commit/bff760b77c1eedfa770e852aa994a69ff51b0a32">bff760b</a>
by Timothée Mazzucotelli). [Issue <a
href="https://redirect.github.com/mkdocstrings/mkdocstrings/issues/548">#548</a>](<a
href="https://redirect.github.com/mkdocstrings/mkdocstrings/issues/548">mkdocstrings/mkdocstrings#548</a>)</li>
</ul>
<h2><a
href="https://github.com/mkdocstrings/mkdocstrings/releases/tag/0.21.0">0.21.0</a>
- 2023-04-05</h2>
<p><!-- raw HTML omitted --><a
href="https://github.com/mkdocstrings/mkdocstrings/compare/0.20.0...0.21.0">Compare
with 0.20.0</a><!-- raw HTML omitted --></p>
<h3>Features</h3>
<ul>
<li>Expose the full config to handlers (<a
href="https://github.com/mkdocstrings/mkdocstrings/commit/15dacf62f8479a05e9604383155ffa6fade0522d">15dacf6</a>
by David Patterson). [Issue <a
href="https://redirect.github.com/mkdocstrings/mkdocstrings/issues/501">#501</a>](<a
href="https://redirect.github.com/mkdocstrings/mkdocstrings/issues/501">mkdocstrings/mkdocstrings#501</a>),
[PR <a
href="https://redirect.github.com/mkdocstrings/mkdocstrings/issues/509">#509</a>](<a
href="https://redirect.github.com/mkdocstrings/mkdocstrings/pull/509">mkdocstrings/mkdocstrings#509</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/9622e38c9c700af9a785b847c4e63bf48e72c2c4"><code>9622e38</code></a>
chore: Prepare release 0.21.1</li>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/bff760b77c1eedfa770e852aa994a69ff51b0a32"><code>bff760b</code></a>
fix: Fix missing typing-extensions dependency on Python less than
3.10</li>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/5c641fce39905f0d6838c3c9a4a41b81fe570e61"><code>5c641fc</code></a>
chore: Fix docs deploy duty</li>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/3513b005e609a133c4ef8c9450063ac033c4dff4"><code>3513b00</code></a>
chore: Prepare release 0.21.0</li>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/444ef32b6ec1c716ddbdae562ed35383fa0a7ef4"><code>444ef32</code></a>
ci: Quality</li>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/56e2818cebf6f1afafda5b1f44f6a07b3766e1c0"><code>56e2818</code></a>
chore: Template upgrade</li>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/15dacf62f8479a05e9604383155ffa6fade0522d"><code>15dacf6</code></a>
feat: Expose the full config to handlers</li>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/82016dfca2db66f193c5deb7127ab62f89482240"><code>82016df</code></a>
ci: Correct type signature for <code>BaseCollector.collect</code></li>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/cd9e62062766ddb14ab16b6d6eaeb3d751dbe417"><code>cd9e620</code></a>
docs: Quote pip argument to avoid shell errors</li>
<li><a
href="https://github.com/mkdocstrings/mkdocstrings/commit/d9b962399b81cdb1b7d629471441b37341dc1851"><code>d9b9623</code></a>
docs: Minor documentation improvements</li>
<li>See full diff in <a
href="https://github.com/mkdocstrings/mkdocstrings/compare/0.20.0...0.21.1">compare
view</a></li>
</ul>
</details>
<br />


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</details>

Author: mathias-baumann-frequenz

pyproject.toml

@@ -53,7 +53,7 @@ docs-gen = [
     "mkdocs-literate-nav == 0.6.0",
     "mkdocs-material == 9.1.5",
     "mkdocs-section-index == 0.3.5",
-    "mkdocstrings[python] == 0.20.0",
+    "mkdocstrings[python] == 0.21.1",
 ]
 docs-lint = [
     "pydocstyle == 6.3.0",