Python: Update pymongo requirement from <4.15,>=4.8.0 to >=4.8.0,<4.16 in /python (#13124)

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Updates the requirements on
[pymongo](https://github.com/mongodb/mongo-python-driver) to permit the
latest version.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/mongodb/mongo-python-driver/releases">pymongo's
releases</a>.</em></p>
<blockquote>
<h2>PyMongo 4.15.0</h2>
<p>Community notes: <a
href="https://www.mongodb.com/community/forums/t/pymongo-4-15-released/328574">https://www.mongodb.com/community/forums/t/pymongo-4-15-released/328574</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/mongodb/mongo-python-driver/blob/master/doc/changelog.rst">pymongo's
changelog</a>.</em></p>
<blockquote>
<h2>Changes in Version 4.15.0 (2025/09/10)</h2>
<p>PyMongo 4.15 brings a number of changes including:</p>
<ul>
<li>Added :class:<code>~pymongo.encryption_options.TextOpts</code>,
:attr:<code>~pymongo.encryption.Algorithm.TEXTPREVIEW</code>,
:attr:<code>~pymongo.encryption.QueryType.PREFIXPREVIEW</code>,
:attr:<code>~pymongo.encryption.QueryType.SUFFIXPREVIEW</code>,
:attr:<code>~pymongo.encryption.QueryType.SUBSTRINGPREVIEW</code>,
as part of the experimental Queryable Encryption text queries beta.
<code>pymongocrypt&gt;=1.16</code> is required for text query
support.</li>
<li>Added :class:<code>bson.decimal128.DecimalEncoder</code> and
:class:<code>bson.decimal128.DecimalDecoder</code>
to support encoding and decoding of BSON Decimal128 values to
decimal.Decimal values using the TypeRegistry API.</li>
<li>Added support for Windows <code>arm64</code> wheels.</li>
</ul>
<h2>Changes in Version 4.14.1 (2025/08/19)</h2>
<p>Version 4.14.1 is a bug fix release.</p>
<ul>
<li>Fixed a bug in <code>MongoClient.append_metadata()</code> and
<code>AsyncMongoClient.append_metadata()</code>
that allowed duplicate <code>DriverInfo.name</code> to be appended to
the metadata.</li>
</ul>
<p>Issues Resolved
...............</p>
<p>See the <code>PyMongo 4.14.1 release notes in JIRA</code>_ for the
list of resolved issues
in this release.</p>
<p>.. _PyMongo 4.14.1 release notes in JIRA: <a
href="https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&amp;version=45256">https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&amp;version=45256</a></p>
<h2>Changes in Version 4.14.0 (2025/08/06)</h2>
<p>.. warning:: PyMongo 4.14 drops support for MongoDB 4.0. PyMongo now
supports
MongoDB 4.2+.</p>
<p>PyMongo 4.14 brings a number of changes including:</p>
<ul>
<li>
<p>Dropped support for MongoDB 4.0.</p>
</li>
<li>
<p>Added preliminary support for Python 3.14 and 3.14 with
free-threading. We do
not yet support the following with Python 3.14:</p>
<ul>
<li>Subinterpreters (<code>concurrent.interpreters</code>)</li>
<li>Free-threading with Encryption</li>
<li>mod_wsgi</li>
</ul>
</li>
<li>
<p>Removed experimental support for free-threading support in Python
3.13.</p>
</li>
<li>
<p>Added :attr:<code>bson.codec_options.TypeRegistry.codecs</code>
and</p>
</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/1514e9b784ed395e7dad806c7b722fef531ecb15"><code>1514e9b</code></a>
Prepare 4.15 release (<a
href="https://redirect.github.com/mongodb/mongo-python-driver/issues/2523">#2523</a>)</li>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/98e9f5ecc1396abf2fafe070de36e1bed5691930"><code>98e9f5e</code></a>
PYTHON-5538 Clean up uv lock file handling (<a
href="https://redirect.github.com/mongodb/mongo-python-driver/issues/2522">#2522</a>)</li>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/d7316afb632fb16e23214ec2a404b308a1054896"><code>d7316af</code></a>
PYTHON-5328 CRUD Support in Driver for Prefix/Suffix/Substring Indexes
(<a
href="https://redirect.github.com/mongodb/mongo-python-driver/issues/2521">#2521</a>)</li>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/7580309e993fdda26dc4ea38ccfd0178e78c99e7"><code>7580309</code></a>
PYTHON-4928 Convert CSFLE spec tests to unified test format (<a
href="https://redirect.github.com/mongodb/mongo-python-driver/issues/2520">#2520</a>)</li>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/47c5460d2ec7eced587add33cb6ab0d717218f49"><code>47c5460</code></a>
Bump pyright from 1.1.404 to 1.1.405 (<a
href="https://redirect.github.com/mongodb/mongo-python-driver/issues/2518">#2518</a>)</li>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/b84e1a7ce4f53faf3b4898fdf8b5b89251f8c047"><code>b84e1a7</code></a>
PYTHON-5527 - Unified test typo in 'Expected error' (<a
href="https://redirect.github.com/mongodb/mongo-python-driver/issues/2517">#2517</a>)</li>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/c0e0554a3b69b7c3140a792934682c19b43fc269"><code>c0e0554</code></a>
PYTHON-5521 - Update TestBsonSizeBatches.test_06_insert_fails_over_16MiB
erro...</li>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/d63edf7aea260be286a3bc98e28f961db43a71b0"><code>d63edf7</code></a>
PYTHON-5524 - Fix CSFLE spec test min version checks (<a
href="https://redirect.github.com/mongodb/mongo-python-driver/issues/2516">#2516</a>)</li>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/b756bbd2a392ee9a810dd9b5df97fc4e16cfae37"><code>b756bbd</code></a>
Bump the actions group with 2 updates (<a
href="https://redirect.github.com/mongodb/mongo-python-driver/issues/2513">#2513</a>)</li>
<li><a
href="https://github.com/mongodb/mongo-python-driver/commit/b2bba67b61f033be5360bebc1ea260164ae75bb2"><code>b2bba67</code></a>
Update coverage requirement from &lt;=7.10.5,&gt;=5 to
&gt;=5,&lt;=7.10.6 (<a
href="https://redirect.github.com/mongodb/mongo-python-driver/issues/2512">#2512</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/mongodb/mongo-python-driver/compare/4.8.0...4.15.0">compare
view</a></li>
</ul>
</details>
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python/pyproject.toml

@@ -106,7 +106,7 @@ mistralai = [
     "mistralai >= 1.2,< 2.0"
 ]
 mongo = [
-    "pymongo >= 4.8.0, < 4.15",
+    "pymongo >= 4.8.0, < 4.16",
     "motor >= 3.3.2,< 3.8.0"
 ]
 notebooks = [