chore(deps): bump dompurify from 3.4.2 to 3.4.3 in /EssentialCSharp.Web (#1095)

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 3.4.2 to
3.4.3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/cure53/DOMPurify/releases">dompurify's
releases</a>.</em></p>
<blockquote>
<h2>DOMPurify 3.4.3</h2>
<ul>
<li>Fixed an issue with handling of nested Shadow DOM trees, thanks <a
href="https://github.com/fishjojo1"><code>@​fishjojo1</code></a></li>
<li>Fixed the template regexes to be more robust against ReDoS attacks,
thanks <a
href="https://github.com/aleung27"><code>@​aleung27</code></a></li>
<li>Updated the node iteration code to catch more Shadow DOM related
issues</li>
<li>Updated Playwright and added Node 26 to test matrix</li>
<li>Updated existing workflows, fuzzer, release signing, etc., added
more tests</li>
<li>Bumped several dependencies where possible</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/cure53/DOMPurify/commit/520edb0371a9638f9b51f1798051299a250c686b"><code>520edb0</code></a>
release: 3.4.3 (<a
href="https://redirect.github.com/cure53/DOMPurify/issues/1352">#1352</a>)</li>
<li>See full diff in <a
href="https://github.com/cure53/DOMPurify/compare/3.4.2...3.4.3">compare
view</a></li>
</ul>
</details>
<br />


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EssentialCSharp.Web/package-lock.json

@@ -14,7 +14,7 @@
     "@zxcvbn-ts/core": "^3.0.4",
     "@zxcvbn-ts/language-common": "^3.0.4",
     "@zxcvbn-ts/language-en": "^3.0.2",
-    "dompurify": "3.4.2",
+    "dompurify": "3.4.3",
     "jquery": "4.0.0",
     "marked": "18.0.3",
     "vue": "3.5.34",