chore(deps-dev): bump pydoclint from 0.8.6 to 0.9.0 (#120)

Bumps [pydoclint](https://github.com/jsh9/pydoclint) from 0.8.6 to
0.9.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/jsh9/pydoclint/releases">pydoclint's
releases</a>.</em></p>
<blockquote>
<h2>0.9.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Handle PEP 696 defaults for Generator annotations by <a
href="https://github.com/gaoflow"><code>@​gaoflow</code></a> in <a
href="https://redirect.github.com/jsh9/pydoclint/pull/293">jsh9/pydoclint#293</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/gaoflow"><code>@​gaoflow</code></a> made
their first contribution in <a
href="https://redirect.github.com/jsh9/pydoclint/pull/293">jsh9/pydoclint#293</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/jsh9/pydoclint/compare/0.8.7...0.9.0">https://github.com/jsh9/pydoclint/compare/0.8.7...0.9.0</a></p>
<h2>0.8.7</h2>
<h2>What's Changed</h2>
<ul>
<li>Fix DOC404 false positive on functions with both return and yield by
<a
href="https://github.com/StressTestor"><code>@​StressTestor</code></a>
in <a
href="https://redirect.github.com/jsh9/pydoclint/pull/291">jsh9/pydoclint#291</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a
href="https://github.com/StressTestor"><code>@​StressTestor</code></a>
made their first contribution in <a
href="https://redirect.github.com/jsh9/pydoclint/pull/291">jsh9/pydoclint#291</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/jsh9/pydoclint/compare/0.8.6...0.8.7">https://github.com/jsh9/pydoclint/compare/0.8.6...0.8.7</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/jsh9/pydoclint/blob/main/CHANGELOG.md">pydoclint's
changelog</a>.</em></p>
<blockquote>
<h2>[0.9.0] - 2026-06-29</h2>
<ul>
<li>Fixed
<ul>
<li>A <code>DOC404</code> false positive for single-argument
<code>Generator[YieldType]</code>
annotations, where pydoclint compared the docstring yield type with the
whole annotation instead of the generator yield type</li>
<li>Return/yield handling for one- and two-argument
<code>Generator[...]</code>
annotations so omitted return types default to <code>None</code> per
PEP-696</li>
</ul>
</li>
<li>Full diff
<ul>
<li><a
href="https://github.com/jsh9/pydoclint/compare/0.8.7...0.9.0">https://github.com/jsh9/pydoclint/compare/0.8.7...0.9.0</a></li>
</ul>
</li>
</ul>
<h2>[0.8.7] - 2026-06-22</h2>
<ul>
<li>Fixed
<ul>
<li>A <code>DOC404</code> false positive on a function with both a
<code>return</code> and a <code>yield</code>
whose return annotation is a parametrized iterator (e.g.
<code>Iterator[Dict[str, Any]]</code>): the yield type was extracted
twice, producing
<code>(str, Any)</code> instead of <code>Dict[str, Any]</code></li>
</ul>
</li>
<li>Full diff
<ul>
<li><a
href="https://github.com/jsh9/pydoclint/compare/0.8.6...0.8.7">https://github.com/jsh9/pydoclint/compare/0.8.6...0.8.7</a></li>
</ul>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/jsh9/pydoclint/commit/09ed6c50f41d6223f84f39e2bd1a426581737a0a"><code>09ed6c5</code></a>
Handle PEP 696 defaults for Generator annotations (<a
href="https://redirect.github.com/jsh9/pydoclint/issues/293">#293</a>)</li>
<li><a
href="https://github.com/jsh9/pydoclint/commit/c30c32235c50af51cbbaffcb5dda042ba792f896"><code>c30c322</code></a>
Fix DOC404 false positive on functions with both return and yield (<a
href="https://redirect.github.com/jsh9/pydoclint/issues/291">#291</a>)</li>
<li>See full diff in <a
href="https://github.com/jsh9/pydoclint/compare/0.8.6...0.9.0">compare
view</a></li>
</ul>
</details>
<br />

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</details>

Author: frequenz-auto-dependabot[bot]

pyproject.toml

@@ -59,7 +59,7 @@ dev-flake8 = [
   "flake8-datetimez == 20.10.0",
   "flake8-docstrings == 1.7.0",
   "flake8-pyproject == 1.2.4", # For reading the flake8 config from pyproject.toml
-  "pydoclint == 0.8.6",
+  "pydoclint == 0.9.0",
   "pydocstyle == 6.3.0",
 ]
 dev-formatting = ["black == 26.5.1", "isort == 8.0.1"]