build(deps): bump pip from 26.1.2 to 26.2 in /examples/wheel in the uv group across 1 directory (#4140)

Bumps the uv group with 1 update in the /examples/wheel directory:
[pip](https://github.com/pypa/pip).

Updates `pip` from 26.1.2 to 26.2
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/pypa/pip/blob/main/NEWS.rst">pip's
changelog</a>.</em></p>
<blockquote>
<h1>26.2 (2026-07-29)</h1>
<h2>Deprecations and Removals</h2>
<ul>
<li>
<p>Newly published packages will no longer be immediately visible to pip
if the index uses caching. To install a newly published package, use
<code>--refresh-package</code>.
(<code>[#13680](https://github.com/pypa/pip/issues/13680)
&lt;https://github.com/pypa/pip/issues/13680&gt;</code>_)</p>
</li>
<li>
<p>Drop support for detecting legacy, non-:pep:<code>405</code>,
<code>virtualenv</code> (&lt; 20)
environments. (<code>[#14062](https://github.com/pypa/pip/issues/14062)
&lt;https://github.com/pypa/pip/issues/14062&gt;</code>_)</p>
</li>
<li>
<p>Constraints files, including <code>PIP_CONSTRAINT</code>, no longer
affect isolated
build environments. Use <code>--build-constraint</code> or the
<code>PIP_BUILD_CONSTRAINT</code>
environment variable to constrain build dependencies instead.</p>
<p>The <code>--use-feature=build-constraint</code> flag is now always
enabled and has no
effect. (<code>[#14094](https://github.com/pypa/pip/issues/14094)
&lt;https://github.com/pypa/pip/issues/14094&gt;</code>_)</p>
</li>
</ul>
<h2>Features</h2>
<ul>
<li>
<p>Declare support for Python 3.15
(<code>[#14208](https://github.com/pypa/pip/issues/14208)
&lt;https://github.com/pypa/pip/issues/14208&gt;</code>_)</p>
</li>
<li>
<p>Support self-referential extras officially. pip has supported this by
accident since version 21.2.
(<code>[#11296](https://github.com/pypa/pip/issues/11296)
&lt;https://github.com/pypa/pip/issues/11296&gt;</code>_)</p>
</li>
<li>
<p>Add <code>--only-deps</code> flag to instruct pip to select only the
dependencies
of supplied packages. It cannot be used with <code>--no-deps</code>,
<code>-r</code>, <code>--group</code>,
or <code>--requirements-from-script</code>.
(<code>[#11440](https://github.com/pypa/pip/issues/11440)
&lt;https://github.com/pypa/pip/issues/11440&gt;</code>_)</p>
</li>
<li>
<p>Cache simple responses in accordance to their
<code>Cache-Control</code> header
instead of always revalidating on every request. To refresh cached
package index responses
and ensure newly published packages are found, use
<code>--refresh-package &lt;package&gt;</code>.
(<code>[#13680](https://github.com/pypa/pip/issues/13680)
&lt;https://github.com/pypa/pip/issues/13680&gt;</code>_)</p>
</li>
<li>
<p>Add <code>--no-require-hashes</code> to disable automatic enablement
of
<code>--require-hashes</code> when encountering a requirement with
hashes. (<code>[#14169](https://github.com/pypa/pip/issues/14169)
&lt;https://github.com/pypa/pip/issues/14169&gt;</code>_)</p>
</li>
<li>
<p>Honor <code>--only-final</code> when sourcing requirements with
<code>-r pylock.toml</code>.
(<code>[#13950](https://github.com/pypa/pip/issues/13950)
&lt;https://github.com/pypa/pip/issues/13950&gt;</code>_)</p>
</li>
<li>
<p>Add support for <code>pylock.toml</code> <code>upload-time</code>
field, so <code>--uploaded-prior-to</code> works with <code>-r
pylock.toml</code>.
(<code>[#14168](https://github.com/pypa/pip/issues/14168)
&lt;https://github.com/pypa/pip/issues/14168&gt;</code>_)</p>
</li>
<li>
<p>Better error messages in case of conflicts with requirements from
<code>-r pylock.toml</code>.
(<code>[#13963](https://github.com/pypa/pip/issues/13963)
&lt;https://github.com/pypa/pip/issues/13963&gt;</code>_)</p>
</li>
<li>
<p>Add experimental support for isolating build subprocesses by creating
standard
virtual environments. This will fix most (if not all) subtle isolation
issues
that can lead to broken builds exclusive to pip. The feature can be
enabled
via <code>--use-feature=venv-isolation</code> and will be enabled by
default in a future
release.</p>
<p>Note that the feature has limited compatibility with
<code>--use-feature=inprocess-build-deps</code>.
While most builds should work with both features enabled, there are
known edge cases.
<code>inprocess-build-deps</code> will not be enabled by default until
they are fixed.
(<code>[#14070](https://github.com/pypa/pip/issues/14070)
&lt;https://github.com/pypa/pip/issues/14070&gt;</code>_)</p>
</li>
<li>
<p>Present more informative diagnostic errors on uncaught network
errors. (<code>[#14115](https://github.com/pypa/pip/issues/14115)
&lt;https://github.com/pypa/pip/issues/14115&gt;</code>_)</p>
</li>
<li>
<p>Allow opting out of Git partial clones with
<code>PIP_NO_PARTIAL_CLONE_FOR_BROKEN_GIT_SERVER</code>.
(<code>[#11043](https://github.com/pypa/pip/issues/11043)
&lt;https://github.com/pypa/pip/issues/11043&gt;</code>_)</p>
</li>
<li>
<p>Add a <code>--no-proxy-env</code> (or <code>--proxy
&quot;&quot;</code>) option to ignore proxies
configured via non-pip environment variables or configuration files.
A proxy set with <code>--proxy</code> is still used.
(<code>[#5378](https://github.com/pypa/pip/issues/5378)
&lt;https://github.com/pypa/pip/issues/5378&gt;</code>_)</p>
</li>
<li>
<p>Add support for pulling username from keyring subprocess provider
(<code>[#12543](https://github.com/pypa/pip/issues/12543)
&lt;https://github.com/pypa/pip/issues/12543&gt;</code>_)</p>
</li>
<li>
<p>Speedup tab autocompletion by lazy-importing certain modules.
(<code>[#4768](https://github.com/pypa/pip/issues/4768)
&lt;https://github.com/pypa/pip/issues/4768&gt;</code>_)</p>
</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/pypa/pip/commit/4b6ae5c4d7d63a61a99fbecbead8dbc35cc8b357"><code>4b6ae5c</code></a>
Bump for release</li>
<li><a
href="https://github.com/pypa/pip/commit/50b6d3cf998e141d106e72ba17380c39f979188d"><code>50b6d3c</code></a>
Update AUTHORS.txt</li>
<li><a
href="https://github.com/pypa/pip/commit/dbddfbde3a2f57401c9ad1b910aee6d195af7b8d"><code>dbddfbd</code></a>
Tweak news entries for pip 26.2 (<a
href="https://redirect.github.com/pypa/pip/issues/14212">#14212</a>)</li>
<li><a
href="https://github.com/pypa/pip/commit/6576b7596c97bb95ce02098303d25bf82dd44943"><code>6576b75</code></a>
Merge pull request <a
href="https://redirect.github.com/pypa/pip/issues/14165">#14165</a> from
sbidoul/refactor-pylock-hanling-sbi</li>
<li><a
href="https://github.com/pypa/pip/commit/0090e0065ae0087d5d6c171a4eb1821e127aa120"><code>0090e00</code></a>
Address a variety of typos detected in code review</li>
<li><a
href="https://github.com/pypa/pip/commit/e12ddd958df6878f38f2a6f777e4653613eb4821"><code>e12ddd9</code></a>
Add support for --uploaded-prior-to with -r pylock.toml</li>
<li><a
href="https://github.com/pypa/pip/commit/5eefdbcb09ab9783ab89f33fb85c48abf45eb7be"><code>5eefdbc</code></a>
Better conflict report for requirements from -r pylock.toml</li>
<li><a
href="https://github.com/pypa/pip/commit/6d71ff83d64b36504761990911e797c0f5d259d1"><code>6d71ff8</code></a>
Test --only-final with -r pylock.toml</li>
<li><a
href="https://github.com/pypa/pip/commit/e7d6eb9983980a6380a12e0822da2c1c560e1bb4"><code>e7d6eb9</code></a>
Refactor -r pylock.toml</li>
<li><a
href="https://github.com/pypa/pip/commit/756506d154a5b5b5746e9c66bc6e52d6ae3803a9"><code>756506d</code></a>
Add TODO about pylock.select and --no-binary</li>
<li>Additional commits viewable in <a
href="https://github.com/pypa/pip/compare/26.1.2...26.2">compare
view</a></li>
</ul>
</details>
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