ci: bump pip from 25.1.1 to 25.2 in /.github/workflows in the ci group (#224)

Bumps the ci group in /.github/workflows with 1 update:
[pip](https://github.com/pypa/pip).

Updates `pip` from 25.1.1 to 25.2
<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>25.2 (2025-07-30)</h1>
<h2>Features</h2>
<ul>
<li>Declare support for Python 3.14
(<code>[#13506](pypa/pip#13506)
&lt;https://github.com/pypa/pip/issues/13506&gt;</code>_)</li>
<li>Automatic download resumption and retrying is enabled by default.
(<code>[#13464](pypa/pip#13464)
&lt;https://github.com/pypa/pip/issues/13464&gt;</code>_)</li>
<li>Requires-Python error message displays version clauses in numerical
order. (<code>[#13367](pypa/pip#13367)
&lt;https://github.com/pypa/pip/issues/13367&gt;</code>_)</li>
<li>Minor performance improvement getting the order to install a very
large number of interdependent packages.
(<code>[#13424](pypa/pip#13424)
&lt;https://github.com/pypa/pip/issues/13424&gt;</code>_)</li>
<li>Show time taken instead of <code>eta 0:00:00</code> at download
completion. (<code>[#13483](pypa/pip#13483)
&lt;https://github.com/pypa/pip/issues/13483&gt;</code>_)</li>
<li>Speed up small CLI tools by removing <code>import re</code> from the
console
script executable template.
(<code>[#13165](pypa/pip#13165)
&lt;https://github.com/pypa/pip/issues/13165&gt;</code>_)</li>
<li>Remove warning when cloning from a Git reference that does not look
like a commit hash.
(<code>[#12283](pypa/pip#12283)
&lt;https://github.com/pypa/pip/issues/12283&gt;</code>_)</li>
</ul>
<h2>Bug Fixes</h2>
<ul>
<li>
<p><code>pip config debug</code> now correctly separates options as set
by the different files
at the same level.
(<code>[#12099](pypa/pip#12099)
&lt;https://github.com/pypa/pip/issues/12099&gt;</code>_)</p>
</li>
<li>
<p>Ensure truststore feature remains active even when a proxy is also in
use. (<code>[#13343](pypa/pip#13343)
&lt;https://github.com/pypa/pip/issues/13343&gt;</code>_)</p>
</li>
<li>
<p>Include sub-commands in tab completion.
(<code>[#13140](pypa/pip#13140)
&lt;https://github.com/pypa/pip/issues/13140&gt;</code>_)</p>
</li>
<li>
<p><code>pip list</code> with the <code>json</code> or
<code>freeze</code> format enabled will no longer
crash when encountering a package with an invalid version.
(<code>[#13345](pypa/pip#13345)
&lt;https://github.com/pypa/pip/issues/13345&gt;</code>_)</p>
</li>
<li>
<p>Provide a hint if a system error is raised involving long filenames
or path segments on Windows.
(<code>[#13346](pypa/pip#13346)
&lt;https://github.com/pypa/pip/issues/13346&gt;</code>_)</p>
</li>
<li>
<p>Resumed downloads are saved to the HTTP cache like any other normal
download. (<code>[#13441](pypa/pip#13441)
&lt;https://github.com/pypa/pip/issues/13441&gt;</code>_)</p>
</li>
<li>
<p>Configured verbosity is consistently forwarded while calling Git
during
VCS operations.
(<code>[#13329](pypa/pip#13329)
&lt;https://github.com/pypa/pip/issues/13329&gt;</code>_)</p>
</li>
<li>
<p>Suppress the progress bar, when running with <code>--log</code> and
<code>--quiet</code>.</p>
<p>Consequently, a new <code>auto</code> mode for
<code>--progress-bar</code> has been added.
<code>auto</code> will enable progress bars unless suppressed by
<code>--quiet</code>,
while <code>on</code> will always enable progress bars.
(<code>[#10915](pypa/pip#10915)
&lt;https://github.com/pypa/pip/issues/10915&gt;</code>_)</p>
</li>
<li>
<p>Fix normalization of local URLs with non-<code>file</code> schemes.
(<code>[#13509](pypa/pip#13509)
&lt;https://github.com/pypa/pip/issues/13509&gt;</code>_)</p>
</li>
<li>
<p>Fix normalization of local file URLs on Windows in newer Python
versions. (<code>[#13510](pypa/pip#13510)
&lt;https://github.com/pypa/pip/issues/13510&gt;</code>_)</p>
</li>
<li>
<p>Fix remaining test failures in Python 3.14 by adjusting
<code>path_to_url</code> and similar functions.
(<code>[#13423](pypa/pip#13423)
&lt;https://github.com/pypa/pip/issues/13423&gt;</code>_)</p>
</li>
<li>
<p>Fix missing <code>network</code> test markings, making the suite pass
in offline
environments again.
(<code>[#13378](pypa/pip#13378)
&lt;https://github.com/pypa/pip/issues/13378&gt;</code>_)</p>
</li>
</ul>
<h2>Vendored Libraries</h2>
<ul>
<li>Upgrade CacheControl to 0.14.3</li>
<li>Upgrade certifi to 2025.7.14</li>
<li>Upgrade distlib to 0.4.0</li>
<li>Upgrade msgpack to 1.1.1</li>
<li>Upgrade platformdirs to 4.3.8</li>
<li>Upgrade pygments to 2.19.2</li>
<li>Upgrade requests to 2.32.4</li>
<li>Upgrade resolvelib to 1.2.0</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/pypa/pip/commit/2e05cae3da2cfafa6dce58167a25b7dba4bc2a33"><code>2e05cae</code></a>
Bump for release</li>
<li><a
href="https://github.com/pypa/pip/commit/f24906109c84ca51eef57a4f925298d38ff31df3"><code>f249061</code></a>
Update AUTHORS.txt</li>
<li><a
href="https://github.com/pypa/pip/commit/78d15a5da09c6fbc5c2cd88fb5bd67bfd7fb0637"><code>78d15a5</code></a>
Copyedit news entries before 25.2 (again)</li>
<li><a
href="https://github.com/pypa/pip/commit/4fe68d78ae8b117ad413ec61c518dd600af08bf0"><code>4fe68d7</code></a>
Merge pull request <a
href="https://redirect.github.com/pypa/pip/issues/13506">#13506</a> from
ichard26/3.14</li>
<li><a
href="https://github.com/pypa/pip/commit/775a86f2bac8894771911ab068b18f09550cb6f0"><code>775a86f</code></a>
Fix broken unit tests &amp; xfail weird failure</li>
<li><a
href="https://github.com/pypa/pip/commit/2773b13baa59ec68b03df9f0f73e4e3c21fcd958"><code>2773b13</code></a>
Reformat and add --allow-unix-socket to pytest config</li>
<li><a
href="https://github.com/pypa/pip/commit/e384d1032c189312ac21f23844c9c6f1f4750eb1"><code>e384d10</code></a>
Declare Python 3.14 support</li>
<li><a
href="https://github.com/pypa/pip/commit/4117dc7c6b606d825904ffbe35d51012923374f4"><code>4117dc7</code></a>
Always remove authority section when cleaning local URL path (<a
href="https://redirect.github.com/pypa/pip/issues/13510">#13510</a>)</li>
<li><a
href="https://github.com/pypa/pip/commit/2e21934b5c35a0e6b41fd586399cd36ed304c03c"><code>2e21934</code></a>
Fix cleaning of local URLs with VCS schemes (<a
href="https://redirect.github.com/pypa/pip/issues/13509">#13509</a>)</li>
<li><a
href="https://github.com/pypa/pip/commit/853a593191d7205b837d32a72e0eb7e7b81e1821"><code>853a593</code></a>
Improve <code>path_to_url()</code> tests (<a
href="https://redirect.github.com/pypa/pip/issues/13496">#13496</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/pypa/pip/compare/25.1.1...25.2">compare
view</a></li>
</ul>
</details>
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.github/workflows/constraints.txt

@@ -1,2 +1,2 @@
-pip==25.1.1
+pip==25.2
 poetry==2.1.3