chore(deps): bump lxml from 6.1.1 to 6.1.2 (#310)

Bumps [lxml](https://github.com/lxml/lxml) from 6.1.1 to 6.1.2.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/lxml/lxml/blob/master/CHANGES.txt">lxml's
changelog</a>.</em></p>
<blockquote>
<h1>6.1.2 (2026-08-18)</h1>
<ul>
<li>
<p>GH#526: Some build files were missing in the sdist.
Patch by Nicola Soranzo.</p>
</li>
<li>
<p>Some minor corrections for error handling cases.</p>
</li>
</ul>
<h2>Other changes</h2>
<ul>
<li>Built with Cython 3.2.9.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/lxml/lxml/commit/f2874e9008c83d2d26e0b7292772eb74d2b83ce3"><code>f2874e9</code></a>
Update release date.</li>
<li><a
href="https://github.com/lxml/lxml/commit/687a295a4c19288b95ec1b74c31a620acaabdf9d"><code>687a295</code></a>
Build: Exclude Py3.8 from windows-arm builds.</li>
<li><a
href="https://github.com/lxml/lxml/commit/acadc56553ff74e6ea296158e118b08ac6ec9f4b"><code>acadc56</code></a>
Build: Remove outdated build target.</li>
<li><a
href="https://github.com/lxml/lxml/commit/59f93eb420a988bc61e7c5b8f4d97869c0536be7"><code>59f93eb</code></a>
Build: Split old-Linux and other-Py3.8 builds.</li>
<li><a
href="https://github.com/lxml/lxml/commit/923df83ed6a40ca5aab267b1c3fe073ff13a00ab"><code>923df83</code></a>
Build: Fix manylinux2014 build.</li>
<li><a
href="https://github.com/lxml/lxml/commit/975cc83e4626117e36adb6d336ac9a6f6cc0ca42"><code>975cc83</code></a>
Build: Fix Px3.8 build setup.</li>
<li><a
href="https://github.com/lxml/lxml/commit/09e5d3e968f380d7a790c2b47f59f7937e00942e"><code>09e5d3e</code></a>
Build: Fix cibuildwheel version.</li>
<li><a
href="https://github.com/lxml/lxml/commit/998cf504a3b0da7f316861c5a552c5c16069d91f"><code>998cf50</code></a>
Build: Build Py3.8 wheels only once, not in every build job.</li>
<li><a
href="https://github.com/lxml/lxml/commit/55670370cd68117ff2b3b71e0f20a7f275d1baeb"><code>5567037</code></a>
Build: Exclude Py3.15 from 32bit builds.</li>
<li><a
href="https://github.com/lxml/lxml/commit/904db40b04ef590ae1ca8fc84be863fc0f8196dc"><code>904db40</code></a>
Build: Update cibuildwheel to include Py3.15.</li>
<li>Additional commits viewable in <a
href="https://github.com/lxml/lxml/compare/lxml-6.1.1...lxml-6.1.2">compare
view</a></li>
</ul>
</details>
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