Bump org.checkerframework:checker-qual from 3.50.0 to 3.51.0 (#237)

Bumps
[org.checkerframework:checker-qual](https://github.com/typetools/checker-framework)
from 3.50.0 to 3.51.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/typetools/checker-framework/releases">org.checkerframework:checker-qual's
releases</a>.</em></p>
<blockquote>
<h2>Checker Framework 3.51.0</h2>
<h2>Version 3.51.0 (2025-09-10)</h2>
<p><strong>User-visible changes:</strong></p>
<p>If you supply <code>--add-exports</code> flags when you run the
Checker Framework, you need to add:

<code>--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED</code>.</p>
<p><strong>Implementation details:</strong></p>
<p>In <code>CFGVisualizeOptions</code>:</p>
<ul>
<li>renamed <code>isPDF()</code> to <code>isPdfOutput()</code></li>
<li>renamed <code>isString()</code> to
<code>isStringOutput()</code></li>
</ul>
<p>Dataflow Framework:</p>
<ul>
<li>In <code>playground</code> package, renamed
<code>*Playground.java</code> to <code>*Pdf.java</code></li>
</ul>
<p><strong>Closed issues:</strong></p>
<p><a
href="https://redirect.github.com/typetools/checker-framework/issues/7229">#7229</a>,
<a
href="https://redirect.github.com/typetools/checker-framework/issues/7241">#7241</a>,
<a
href="https://redirect.github.com/typetools/checker-framework/issues/7248">#7248</a>,
<a
href="https://redirect.github.com/typetools/checker-framework/issues/7258">#7258</a>.</p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/typetools/checker-framework/blob/master/docs/CHANGELOG.md">org.checkerframework:checker-qual's
changelog</a>.</em></p>
<blockquote>
<h2>Version 3.51.0 (2025-09-10)</h2>
<p><strong>Implementation details:</strong></p>
<p>In <code>CFGVisualizeOptions</code>:</p>
<ul>
<li>renamed <code>isPDF()</code> to <code>isPdfOutput()</code></li>
<li>renamed <code>isString()</code> to
<code>isStringOutput()</code></li>
</ul>
<p>Dataflow Framework:</p>
<ul>
<li>In <code>playground</code> package, renamed
<code>*Playground.java</code> to <code>*Pdf.java</code></li>
</ul>
<p><strong>Closed issues:</strong></p>
<p><a
href="https://redirect.github.com/typetools/checker-framework/issues/7229">#7229</a>,
<a
href="https://redirect.github.com/typetools/checker-framework/issues/7241">#7241</a>,
<a
href="https://redirect.github.com/typetools/checker-framework/issues/7248">#7248</a>,
<a
href="https://redirect.github.com/typetools/checker-framework/issues/7258">#7258</a>.</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/typetools/checker-framework/commit/f78f6faefa3f58f7ce0fd7fdf003d31aae2a3685"><code>f78f6fa</code></a>
new release 3.51.0</li>
<li><a
href="https://github.com/typetools/checker-framework/commit/0a9cceb61b68ac4c97ac66530fd1561d3c4fa858"><code>0a9cceb</code></a>
Prep for release.</li>
<li><a
href="https://github.com/typetools/checker-framework/commit/8556f47a8291aa25a5226b88f6800a786b121807"><code>8556f47</code></a>
Growonly checker tests</li>
<li><a
href="https://github.com/typetools/checker-framework/commit/1d0d3cd6ce063e600736c9e180de0993ec02f78b"><code>1d0d3cd</code></a>
Fix bug in CFG construction for preincrement</li>
<li><a
href="https://github.com/typetools/checker-framework/commit/bdd6fcb9ae628be5e09200d22a1e7bd6d114fc35"><code>bdd6fcb</code></a>
Update example of message key substrings</li>
<li><a
href="https://github.com/typetools/checker-framework/commit/692afc166511258a48586db3872326e5d6f2a19d"><code>692afc1</code></a>
Fix typos</li>
<li><a
href="https://github.com/typetools/checker-framework/commit/33b8815da1eb3e61e733a0e98d85fc3012633c6e"><code>33b8815</code></a>
Better error message when user omits an <code>--add-exports</code> (<a
href="https://redirect.github.com/typetools/checker-framework/issues/7249">#7249</a>)</li>
<li><a
href="https://github.com/typetools/checker-framework/commit/91d54733363e0e3721b29b1d3eff04369613b9b9"><code>91d5473</code></a>
Remove file <code>.flake8</code></li>
<li><a
href="https://github.com/typetools/checker-framework/commit/60bbfa5e2582f821db3b1a4dfe3b08ae9867bb7c"><code>60bbfa5</code></a>
Use <code>tasks.register</code></li>
<li><a
href="https://github.com/typetools/checker-framework/commit/ebff22831186d83c675081863b07160b713d9fd2"><code>ebff228</code></a>
Update dependency org.projectlombok:lombok to v1.18.40 (<a
href="https://redirect.github.com/typetools/checker-framework/issues/7247">#7247</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/typetools/checker-framework/compare/checker-framework-3.50.0...checker-framework-3.51.0">compare
view</a></li>
</ul>
</details>
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pom.xml

@@ -551,7 +551,7 @@
             <dependency>
                 <groupId>org.checkerframework</groupId>
                 <artifactId>checker-qual</artifactId>
-                <version>3.50.0</version>
+                <version>3.51.0</version>
                 <scope>provided</scope>
             </dependency>
             <dependency>