Bump lxml from 4.5.0 to 4.6.5#7

Bumps [lxml](https://github.com/lxml/lxml) from 4.5.0 to 4.6.5. <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>4.6.5 (2021-12-12)</h1> <h2>Bugs fixed</h2> <ul> <li> <p>A vulnerability (GHSL-2021-1038) in the HTML cleaner allowed sneaking script content through SVG images.</p> </li> <li> <p>A vulnerability (GHSL-2021-1037) in the HTML cleaner allowed sneaking script content through CSS imports and other crafted constructs.</p> </li> </ul> <h1>4.6.4 (2021-11-01)</h1> <h2>Features added</h2> <ul> <li> <p>GH#317: A new property <code>system_url</code> was added to DTD entities. Patch by Thirdegree.</p> </li> <li> <p>GH#314: The <code>STATIC_*</code> variables in <code>setup.py</code> can now be passed via env vars. Patch by Isaac Jurado.</p> </li> </ul> <h1>4.6.3 (2021-03-21)</h1> <h2>Bugs fixed</h2> <ul> <li>A vulnerability (CVE-2021-28957) was discovered in the HTML Cleaner by Kevin Chung, which allowed JavaScript to pass through. The cleaner now removes the HTML5 <code>formaction</code> attribute.</li> </ul> <h1>4.6.2 (2020-11-26)</h1> <h2>Bugs fixed</h2> <ul> <li>A vulnerability (CVE-2020-27783) was discovered in the HTML Cleaner by Yaniv Nizry, which allowed JavaScript to pass through. The cleaner now removes more sneaky &quot;style&quot; content.</li> </ul> <h1>4.6.1 (2020-10-18)</h1> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/lxml/lxml/commit/a9611ba80bc5196c1dd07a0b1964fcb603695d63"><code>a9611ba</code></a> Fix a test in Py2.</li> <li><a href="https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c"><code>a3eacbc</code></a> Prepare release of 4.6.5.</li> <li><a href="https://github.com/lxml/lxml/commit/b7ea6871bd751b588868cf85b7784211f2c12fe7"><code>b7ea687</code></a> Update changelog.</li> <li><a href="https://github.com/lxml/lxml/commit/69a747356655158fdf9abaecea5feafb3bd6b5f5"><code>69a7473</code></a> Cleaner: cover some more cases where scripts could sneak through in specially...</li> <li><a href="https://github.com/lxml/lxml/commit/54d2985a36184a4b36017a6000fa4d11411f7292"><code>54d2985</code></a> Fix condition in test decorator.</li> <li><a href="https://github.com/lxml/lxml/commit/4b220b5ee6f53312418004d830d37cef4fbc1681"><code>4b220b5</code></a> Use the non-depcrecated TextTestResult instead of _TextTestResult (<a href="https://github-redirect.dependabot.com/lxml/lxml/issues/333">GH-333</a>)</li> <li><a href="https://github.com/lxml/lxml/commit/d85c6de992886dd13f6b7acb8e549674d313f6f8"><code>d85c6de</code></a> Exclude a test when using the macOS system libraries because it fails with li...</li> <li><a href="https://github.com/lxml/lxml/commit/cd4bec9cb62b3134b09494bd0ba6b6bc11d184df"><code>cd4bec9</code></a> Add macOS-M1 as wheel build platform.</li> <li><a href="https://github.com/lxml/lxml/commit/fd0d4713f258f77e57d289415001d5b9ce04ce53"><code>fd0d471</code></a> Install automake and libtool in macOS build to be able to install the latest ...</li> <li><a href="https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"><code>f233023</code></a> Cleaner: Remove SVG image data URLs since they can embed script content.</li> <li>Additional commits viewable in <a href="https://github.com/lxml/lxml/compare/lxml-4.5.0...lxml-4.6.5">compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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