Update pytest-xdist requirement from 3.7.0 to 3.8.0 in /backend (#1286)

Updates the requirements on
[pytest-xdist](https://github.com/pytest-dev/pytest-xdist) to permit the
latest version.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/pytest-dev/pytest-xdist/blob/master/CHANGELOG.rst">pytest-xdist's
changelog</a>.</em></p>
<blockquote>
<h1>pytest-xdist 3.8.0 (2025-06-30)</h1>
<h2>Features</h2>
<ul>
<li>

<p><code>[#1083](pytest-dev/pytest-xdist#1083)
&lt;https://github.com/pytest-dev/pytest-xdist/issues/1083&gt;</code>_:
Add <code>--no-loadscope-reorder</code> and
<code>--loadscope-reorder</code> option to control whether to
automatically reorder tests in loadscope for tests where relative
ordering matters. This only applies when using
<code>loadscope</code>.</p>
<p>For example, [test_file_1, test_file_2, ..., test_file_n] are given
as input test files, if <code>--no-loadscope-reorder</code> is used, for
either worker, the <code>test_file_a</code> will be executed before
<code>test_file_b</code> only if <code>a &lt; b</code>.</p>
<p>The default behavior is to reorder the tests to maximize the number
of tests that can be executed in parallel.</p>
</li>
</ul>
<h1>pytest-xdist 3.7.0 (2025-05-26)</h1>
<h2>Features</h2>
<ul>
<li>

<p><code>[#1142](pytest-dev/pytest-xdist#1142)
&lt;https://github.com/pytest-dev/pytest-xdist/issues/1142&gt;</code>_:
Added support for Python 3.13.</p>
</li>
<li>

<p><code>[#1144](pytest-dev/pytest-xdist#1144)
&lt;https://github.com/pytest-dev/pytest-xdist/issues/1144&gt;</code>_:
The internal <code>steal</code> command is now atomic - it unschedules
either all requested tests or none.</p>
<p>This is a prerequisite for group/scope support in the
<code>worksteal</code> scheduler, so test groups won't be broken up
incorrectly.</p>
</li>
<li>

<p><code>[#1170](pytest-dev/pytest-xdist#1170)
&lt;https://github.com/pytest-dev/pytest-xdist/issues/1170&gt;</code>_:
Add the <code>--px</code> arg to create proxy gateways.</p>
<p>Proxy gateways are passed to additional gateways using the
<code>via</code> keyword.
They can serve as a way to run multiple workers on remote machines.</p>
</li>
<li>

<p><code>[#1200](pytest-dev/pytest-xdist#1200)
&lt;https://github.com/pytest-dev/pytest-xdist/issues/1200&gt;</code>_:
Now multiple <code>xdist_group</code> markers are considered when
assigning tests to groups (order does not matter).</p>
<p>Previously, only the last marker would assign a test to a group, but
now if a test has multiple <code>xdist_group</code> marks applied (for
example via parametrization or via fixtures), they are merged to make a
new group.</p>
</li>
</ul>
<h2>Removals</h2>
<ul>

<li><code>[#1162](pytest-dev/pytest-xdist#1162)
&lt;https://github.com/pytest-dev/pytest-xdist/issues/1162&gt;</code>_:
Dropped support for EOL Python 3.8.</li>
</ul>
<h2>Trivial Changes</h2>
<ul>
<li>

<p><code>[#1092](pytest-dev/pytest-xdist#1092)
&lt;https://github.com/pytest-dev/pytest-xdist/issues/1092&gt;</code>_:
Update an error message to better indicate where users should go for
more information.</p>
</li>
<li>

<p><code>[#1190](pytest-dev/pytest-xdist#1190)
&lt;https://github.com/pytest-dev/pytest-xdist/issues/1190&gt;</code>_:
Switched to using a SPDX license identifier introduced in PEP 639.</p>
</li>
</ul>
<h1>pytest-xdist 3.6.1 (2024-04-28)</h1>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/1e3e4dc16523c8a8f6c67d95a950166420718c99"><code>1e3e4dc</code></a>
Release 3.8.0</li>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/600aad575a4e4382855145b0c464d51b8f0b7242"><code>600aad5</code></a>
Ensure all xdist group names are strings (<a
href="https://redirect.github.com/pytest-dev/pytest-xdist/issues/1216">#1216</a>)</li>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/9d7ba5b5fbbbe26793fbfb7cb1903eb69425cf09"><code>9d7ba5b</code></a>
Add <code>--no-loadscope-reorder</code> and
<code>--loadscope-reorder</code> options (<a
href="https://redirect.github.com/pytest-dev/pytest-xdist/issues/1217">#1217</a>)</li>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/532f07fb181bb1546eda79bbe6b46bdb56c699e1"><code>532f07f</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest-xdist/issues/1210">#1210</a>
from pytest-dev/pre-commit-ci-update-config</li>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/0883ad085e0cf039c8ae13eb2789c1076544d225"><code>0883ad0</code></a>
Fix Path usage in <code>test_rsync_roots_no_roots</code></li>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/58a51bc14015d211761e44c2bdacab09c3893668"><code>58a51bc</code></a>
[pre-commit.ci] pre-commit autoupdate</li>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/59a2ad0150697b9ff837f3ae8dcf6e074d5a114b"><code>59a2ad0</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest-xdist/issues/1220">#1220</a>
from pytest-dev/dependabot/github_actions/github-act...</li>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/d42b9c72044855236c68286ca3bdb34486a05872"><code>d42b9c7</code></a>
build(deps): bump hynek/build-and-inspect-python-package</li>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/ebfcb99072aed3503fda5175245f28895a0204bb"><code>ebfcb99</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest-xdist/issues/1206">#1206</a>
from pytest-dev/release-3.7.0</li>
<li><a
href="https://github.com/pytest-dev/pytest-xdist/commit/23b7fd6054298a530b02b33d07007b3082a36277"><code>23b7fd6</code></a>
[pre-commit.ci] pre-commit autoupdate (<a
href="https://redirect.github.com/pytest-dev/pytest-xdist/issues/1207">#1207</a>)</li>
<li>See full diff in <a
href="https://github.com/pytest-dev/pytest-xdist/compare/v3.7.0...v3.8.0">compare
view</a></li>
</ul>
</details>
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backend/Pipfile

@@ -39,7 +39,7 @@ pylint = "3.3.1"
 pytest = "8.4.0"
 pytest-asyncio = "1.0.0"
 pytest-cov = "6.2.0"
-pytest-xdist = "3.7.0"
+pytest-xdist = "3.8.0"
 ruff = "0.11.0"
 vulture = "2.14"