Bump zipp from 3.18.0 to 3.18.1 in /external/price_server (#127)

Bumps [zipp](https://github.com/jaraco/zipp) from 3.18.0 to 3.18.1.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/jaraco/zipp/blob/main/NEWS.rst">zipp's
changelog</a>.</em></p>
<blockquote>
<h1>v3.18.1</h1>
<p>No significant changes.</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/jaraco/zipp/commit/bfae83474a730e8cc9b8a71027fb859b46b3875c"><code>bfae834</code></a>
Finalize</li>
<li><a
href="https://github.com/jaraco/zipp/commit/487066ec9757c3c82e96014d0b30906996c6280d"><code>487066e</code></a>
Merge changelog into last release.</li>
<li><a
href="https://github.com/jaraco/zipp/commit/4584ee2dcfb10d5314ad319d9d5b140c90bc2951"><code>4584ee2</code></a>
Move changelog entry, saved to the wrong location :(</li>
<li>See full diff in <a
href="https://github.com/jaraco/zipp/compare/v3.18.0...v3.18.1">compare
view</a></li>
</ul>
</details>
<br />


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external/price_server/requirements.txt

@@ -45,4 +45,4 @@ tomlkit==0.12.4
 typing_extensions==4.10.0
 Werkzeug==3.0.1
 wrapt==1.16.0
-zipp==3.18.0
+zipp==3.18.1