Bump cython from 3.1.1 to 3.1.2 (#11164)

Bumps [cython](https://github.com/cython/cython) from 3.1.1 to 3.1.2.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/cython/cython/blob/master/CHANGES.rst">cython's
changelog</a>.</em></p>
<blockquote>
<h1>3.1.2 (2025-06-09)</h1>
<h2>Bugs fixed</h2>
<ul>
<li>
<p>Attribute lookups failed on the <code>bool</code> builtin type.
(Github issue :issue:<code>6905</code>)</p>
</li>
<li>
<p>Type checks on or-ed union types could incorrectly return false.
(Github issue :issue:<code>6420</code>)</p>
</li>
<li>
<p>Negative list indexing could accidentally wrap around twice in PyPy
and the Limited API.</p>
</li>
<li>
<p>Iterating over literal sequences with starred (unpacked) items could
infer a wrong
type for the loop variable and fail to assign the values.
(Github issue :issue:<code>6924</code>)</p>
</li>
<li>
<p>Calls to C functions taking exception types failed to check for a
<code>None</code> argument.
(Github issue :issue:<code>6420</code>)</p>
</li>
<li>
<p>Fused functions had an incorrect <code>__module__</code> attribute.
(Github issue :issue:<code>6897</code>)</p>
</li>
<li>
<p>The type of Cython implemented functions had an incorrect
<code>__module__</code> attribute.
(Github issue :issue:<code>6841</code>)</p>
</li>
<li>
<p>Errors while indexing into <code>bytearray</code> or <code>str</code>
in <code>nogil</code> sections could crash.
(Github issue :issue:<code>6947</code>)</p>
</li>
<li>
<p><code>bytearray.append()</code> could silently accept some invalid
character numbers.</p>
</li>
<li>
<p>The C++11 <code>&lt;type_traits&gt;</code> header was included
regardless of the C++ version.
(Github issue :issue:<code>6896</code>)</p>
</li>
<li>
<p><code>PyDict_GetItemStringRef()</code> was accidentally used in older
Limited API versions.
(Github issue :issue:<code>6914</code>)</p>
</li>
<li>
<p><code>abort()</code> was used but not always available in the Limited
API.
(Github issue :issue:<code>6918</code>)</p>
</li>
<li>
<p>Some dependencies were missing from the <code>depfile</code>.
(Github issue :issue:<code>6938</code>)</p>
</li>
<li>
<p>Embedded function signatures were not always separated from the
existing docstring.
(Github issue :issue:<code>6904</code>)</p>
</li>
<li>
<p><code>numpy.math</code> was missing from
<code>Cython/Includes/</code> and could not be cimported.
(Github issue :issue:<code>6859</code>)</p>
</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/cython/cython/commit/51f471dad7c8588c77d4f60f90fc5855bd012790"><code>51f471d</code></a>
Bump ccache action version (<a
href="https://redirect.github.com/cython/cython/issues/6955">GH-6955</a>)</li>
<li><a
href="https://github.com/cython/cython/commit/40c232487d787341fc8fa24b3d72520034eb7021"><code>40c2324</code></a>
Update changelog.</li>
<li><a
href="https://github.com/cython/cython/commit/98b70ee3ec2a60c570b97862561da468b7cc28ca"><code>98b70ee</code></a>
Fixup shared metaclass in 3.1.x (<a
href="https://redirect.github.com/cython/cython/issues/6953">GH-6953</a>)</li>
<li><a
href="https://github.com/cython/cython/commit/59e2502c1f87b14fb6743e274b4fbf4bb8c01240"><code>59e2502</code></a>
Make sure we correctly reject large negative integer values in
&quot;bytearray.app...</li>
<li><a
href="https://github.com/cython/cython/commit/466891c90a8d78b586da3940edf024fc780c9119"><code>466891c</code></a>
Use an explicit cast to avoid a C conversion warning.</li>
<li><a
href="https://github.com/cython/cython/commit/b0d6aa15be3f1440575fecad1e58adc5b06f5935"><code>b0d6aa1</code></a>
Prepare release of 3.1.2.</li>
<li><a
href="https://github.com/cython/cython/commit/0440d5fb00487cac465be9d55a4e4fb97643ffdb"><code>0440d5f</code></a>
Update changelog.</li>
<li><a
href="https://github.com/cython/cython/commit/e860884936f1da77bf30742f767edd1a3f5d9355"><code>e860884</code></a>
Fix <code>__module__</code> attribute of shared types with metaclass (<a
href="https://redirect.github.com/cython/cython/issues/6882">#6882</a>)</li>
<li><a
href="https://github.com/cython/cython/commit/5e9d7ad9b12d9715d5a83f3183d6b2d291f5855f"><code>5e9d7ad</code></a>
Build: Explicitly include &quot;numpy/math.pxd&quot; again.</li>
<li><a
href="https://github.com/cython/cython/commit/ea65182b1ec016f3621ed376c1f664c864f11d76"><code>ea65182</code></a>
Fix error handling in nogil indexing of bytearray and str (<a
href="https://redirect.github.com/cython/cython/issues/6947">#6947</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/cython/cython/compare/3.1.1...3.1.2">compare
view</a></li>
</ul>
</details>
<br />


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Signed-off-by: dependabot[bot] <[email protected]>
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Author: dependabot[bot]

requirements/constraints.txt

@@ -60,7 +60,7 @@ cryptography==45.0.3
     # via
     #   pyjwt
     #   trustme
-cython==3.1.1
+cython==3.1.2
     # via -r requirements/cython.in
 distlib==0.3.9
     # via virtualenv

requirements/cython.txt

@@ -4,7 +4,7 @@
 #
 #    pip-compile --allow-unsafe --output-file=requirements/cython.txt --resolver=backtracking --strip-extras requirements/cython.in
 #
-cython==3.1.1
+cython==3.1.2
     # via -r requirements/cython.in
 multidict==6.4.4
     # via -r requirements/multidict.in