build(deps-dev): bump sinon from 21.0.2 to 21.0.3 (#527)

Bumps [sinon](https://github.com/sinonjs/sinon) from 21.0.2 to 21.0.3.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/sinonjs/sinon/blob/main/docs/changelog.md">sinon's
changelog</a>.</em></p>
<blockquote>
<h2>21.0.3</h2>
<ul>
<li><a
href="https://github.com/sinonjs/sinon/commit/0494251bc54c56e7e79258586238db88f0d191b3"><code>0494251b</code></a>
fix(<a
href="https://redirect.github.com/sinonjs/sinon/issues/2678">#2678</a>):
upgrade samsam to fix buffer comparisons (Carl-Erik Kopseng)</li>
</ul>
<p><em>Released by <a href="https://github.com/fatso83">Carl-Erik
Kopseng</a> on 2026-03-16.</em></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/sinonjs/sinon/commit/138148233c549cb7eeaa8e84d857912fd3a349d5"><code>1381482</code></a>
21.0.3</li>
<li><a
href="https://github.com/sinonjs/sinon/commit/0494251bc54c56e7e79258586238db88f0d191b3"><code>0494251</code></a>
fix(<a
href="https://redirect.github.com/sinonjs/sinon/issues/2678">#2678</a>):
upgrade samsam to fix buffer comparisons</li>
<li>See full diff in <a
href="https://github.com/sinonjs/sinon/compare/v21.0.2...v21.0.3">compare
view</a></li>
</ul>
</details>
<br />


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package-lock.json

@@ -208,7 +208,7 @@
     "glob": "^13.0.6",
     "minimatch": "^10.2.4",
     "mocha": "^11.7.5",
-    "sinon": "^21.0.2",
+    "sinon": "^21.0.3",
     "split2": "^4.2.0",
     "stacktrace-parser": "^0.1.11",
     "supports-color": "^10.2.2",