Bump typing-extensions from 4.12.0 to 4.12.1 (#367)

Bumps [typing-extensions](https://github.com/python/typing_extensions)
from 4.12.0 to 4.12.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/python/typing_extensions/releases">typing-extensions's
releases</a>.</em></p>
<blockquote>
<h2>4.12.1</h2>
<ul>
<li>Preliminary changes for compatibility with the draft implementation
of PEP 649 in Python 3.14. Patch by Jelle Zijlstra.</li>
<li>Fix regression in v4.12.0 where nested <code>Annotated</code> types
would cause
<code>TypeError</code> to be raised if the nested <code>Annotated</code>
type had unhashable
metadata. Patch by Alex Waygood.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/python/typing_extensions/blob/main/CHANGELOG.md">typing-extensions's
changelog</a>.</em></p>
<blockquote>
<h1>Release 4.12.1 (June 1, 2024)</h1>
<ul>
<li>Preliminary changes for compatibility with the draft implementation
of PEP 649 in Python 3.14. Patch by Jelle Zijlstra.</li>
<li>Fix regression in v4.12.0 where nested <code>Annotated</code> types
would cause
<code>TypeError</code> to be raised if the nested <code>Annotated</code>
type had unhashable
metadata. Patch by Alex Waygood.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/python/typing_extensions/commit/726963800030ab35ba5b975fc3a60486c26c5050"><code>7269638</code></a>
Prepare release 4.12.1 (<a
href="https://redirect.github.com/python/typing_extensions/issues/418">#418</a>)</li>
<li><a
href="https://github.com/python/typing_extensions/commit/8dfcf3c74a4f5d736a6d2ce8d82c3e85cd0c5b18"><code>8dfcf3c</code></a>
Fix <code>TypeError</code> on nested <code>Annotated</code> types where
the inner type has unhashab...</li>
<li><a
href="https://github.com/python/typing_extensions/commit/d76f5911b7d44aa1ff26de22e76047ca6c53f840"><code>d76f591</code></a>
Switch from flake8 to ruff (<a
href="https://redirect.github.com/python/typing_extensions/issues/414">#414</a>)</li>
<li><a
href="https://github.com/python/typing_extensions/commit/920d60d09e929e23657a4459dd446fb428715981"><code>920d60d</code></a>
Support my PEP 649 branch (<a
href="https://redirect.github.com/python/typing_extensions/issues/412">#412</a>)</li>
<li><a
href="https://github.com/python/typing_extensions/commit/e792bce5508dad9f5f00066ad615d231cc1d64c1"><code>e792bce</code></a>
Ignore fewer flake8 rules when linting tests (<a
href="https://redirect.github.com/python/typing_extensions/issues/413">#413</a>)</li>
<li>See full diff in <a
href="https://github.com/python/typing_extensions/compare/4.12.0...4.12.1">compare
view</a></li>
</ul>
</details>
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