build(deps): bump ujson from 5.12.0 to 5.12.1 in /py (#429)

Bumps [ujson](https://github.com/ultrajson/ultrajson) from 5.12.0 to
5.12.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/ultrajson/ultrajson/releases">ujson's
releases</a>.</em></p>
<blockquote>
<h2>5.12.1</h2>
<h2>Fixed</h2>
<ul>
<li>Fix encoding ref leak with non-English character (<a
href="https://redirect.github.com/ultrajson/ultrajson/issues/714">#714</a>)
<a
href="https://github.com/nhancdt2602"><code>@​nhancdt2602</code></a></li>
<li>Fix memory leak when <code>ujson.dump()</code> is unable to write to
its file (0bf630aaef59c0aafd0c8a4fc8bbe2a7bcefa853) <a
href="https://github.com/bwoodsend"><code>@​bwoodsend</code></a></li>
</ul>
<p>Note that pre-built wheels for graalpy on macOS have been omitted
from this release due to infrastructural issues building them (<a
href="https://redirect.github.com/ultrajson/ultrajson/issues/731">#731</a>).</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/7d9036f4896256ac772fdb45d27d45463efe59cb"><code>7d9036f</code></a>
Temporarily disable pre-built wheels for graalpy on macOS (<a
href="https://redirect.github.com/ultrajson/ultrajson/issues/730">#730</a>)</li>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/0bf630aaef59c0aafd0c8a4fc8bbe2a7bcefa853"><code>0bf630a</code></a>
Temporarily disable pre-built wheels for graalpy on macOS</li>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/46f75969b18e1d37da3ad0fbb1954d146e072c5d"><code>46f7596</code></a>
Enable read access for CI/CD</li>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/82af1d0ac01d09aa40c887b460d44b9d9f4bccd9"><code>82af1d0</code></a>
Fix failure cleanup paths in ujson.dump()</li>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/ceae6cd09dd1c29e747fa4041febcd4fdfd33c0a"><code>ceae6cd</code></a>
Gitignore .fuse_hidden and .DS_Store files</li>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/dd87ed388816eb5a02bc6f752c27cda5df5c1aa1"><code>dd87ed3</code></a>
Improve unit test coverage (<a
href="https://redirect.github.com/ultrajson/ultrajson/issues/718">#718</a>)</li>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/ddbe2da83bd7fe9940eec1766bd75e21e76bc7d7"><code>ddbe2da</code></a>
Update release-drafter/release-drafter action to v7.2.1 (<a
href="https://redirect.github.com/ultrajson/ultrajson/issues/717">#717</a>)</li>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/3be5ae59f5548ec9a1fef56bfa2a005cfa5c6c09"><code>3be5ae5</code></a>
Update release-drafter/release-drafter action to v7.2.1</li>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/9f90a8c797a20c19a80b78d340ac4251626c7494"><code>9f90a8c</code></a>
Fix encoding ref leak with non-English character (<a
href="https://redirect.github.com/ultrajson/ultrajson/issues/714">#714</a>)</li>
<li><a
href="https://github.com/ultrajson/ultrajson/commit/f1574e57b8a31efaa9b1bfa530c672bc1fe3536d"><code>f1574e5</code></a>
Hash pin GitHub Actions (<a
href="https://redirect.github.com/ultrajson/ultrajson/issues/715">#715</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/ultrajson/ultrajson/compare/5.12.0...5.12.1">compare
view</a></li>
</ul>
</details>
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