Update pytest-cov requirement from 4.0.0 to 6.0.0 in /backend (#1080)

Updates the requirements on
[pytest-cov](https://github.com/pytest-dev/pytest-cov) to permit the
latest version.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst">pytest-cov's
changelog</a>.</em></p>
<blockquote>
<h2>6.0.0 (2024-10-29)</h2>
<ul>
<li>Updated various documentation inaccuracies, especially on subprocess
handling.</li>
<li>Changed fail under checks to use the precision set in the coverage
configuration.
Now it will perform the check just like <code>coverage report</code>
would.</li>
<li>Added a <code>--cov-precision</code> cli option that can override
the value set in your coverage configuration.</li>
<li>Dropped support for now EOL Python 3.8.</li>
</ul>
<h2>5.0.0 (2024-03-24)</h2>
<ul>
<li>Removed support for xdist rsync (now deprecated).
Contributed by Matthias Reichenbach in
<code>[#623](pytest-dev/pytest-cov#623)
&lt;https://github.com/pytest-dev/pytest-cov/pull/623&gt;</code>_.</li>
<li>Switched docs theme to Furo.</li>
<li>Various legacy Python cleanup and CI improvements.
Contributed by Christian Clauss and Hugo van Kemenade in
<code>[#630](pytest-dev/pytest-cov#630)
&lt;https://github.com/pytest-dev/pytest-cov/pull/630&gt;</code><em>,
<code>[#631](pytest-dev/pytest-cov#631)
&lt;https://github.com/pytest-dev/pytest-cov/pull/631&gt;</code></em>,
<code>[#632](pytest-dev/pytest-cov#632)
&lt;https://github.com/pytest-dev/pytest-cov/pull/632&gt;</code>_ and
<code>[#633](pytest-dev/pytest-cov#633)
&lt;https://github.com/pytest-dev/pytest-cov/pull/633&gt;</code>_.</li>
<li>Added a <code>pyproject.toml</code> example in the docs.
Contributed by Dawn James in
<code>[#626](pytest-dev/pytest-cov#626)
&lt;https://github.com/pytest-dev/pytest-cov/pull/626&gt;</code>_.</li>
<li>Modernized project's pre-commit hooks to use ruff. Initial POC
contributed by
Christian Clauss in
<code>[#584](pytest-dev/pytest-cov#584)
&lt;https://github.com/pytest-dev/pytest-cov/pull/584&gt;</code>_.</li>
<li>Dropped support for Python 3.7.</li>
</ul>
<h2>4.1.0 (2023-05-24)</h2>
<ul>
<li>Updated CI with new Pythons and dependencies.</li>
<li>Removed rsyncdir support. This makes pytest-cov compatible with
xdist 3.0.
Contributed by Sorin Sbarnea in
<code>[#558](pytest-dev/pytest-cov#558)
&lt;https://github.com/pytest-dev/pytest-cov/pull/558&gt;</code>_.</li>
<li>Optimized summary generation to not be performed if no reporting is
active (for example,
when <code>--cov-report=''</code> is used without
<code>--cov-fail-under</code>).
Contributed by Jonathan Stewmon in
<code>[#589](pytest-dev/pytest-cov#589)
&lt;https://github.com/pytest-dev/pytest-cov/pull/589&gt;</code>_.</li>
<li>Added support for JSON reporting.
Contributed by Matthew Gamble in
<code>[#582](pytest-dev/pytest-cov#582)
&lt;https://github.com/pytest-dev/pytest-cov/pull/582&gt;</code>_.</li>
<li>Refactored code to use f-strings.
Contributed by Mark Mayo in
<code>[#572](pytest-dev/pytest-cov#572)
&lt;https://github.com/pytest-dev/pytest-cov/pull/572&gt;</code>_.</li>
<li>Fixed a skip in the test suite for some old xdist.
Contributed by a bunch of people in
<code>[#565](pytest-dev/pytest-cov#565)
&lt;https://github.com/pytest-dev/pytest-cov/pull/565&gt;</code>_.</li>
<li>Dropped support for Python 3.6.</li>
</ul>
<h2>4.0.0 (2022-09-28)</h2>
<p><strong>Note that this release drops support for
multiprocessing.</strong></p>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/95404375a0e436178e012e20b8865c23c54c8a50"><code>9540437</code></a>
Bump version: 5.0.0 → 6.0.0</li>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/9f8175467afc67db9001fb364ad1f2dfe79b51f1"><code>9f81754</code></a>
Further trim down envs and drop Python 3.8.</li>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/b12b5ec65da4c66bbc0c35918957f9f875f465c3"><code>b12b5ec</code></a>
Update conf.</li>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/23f4b27b432a54fcc3b6df7363f0e73e568233fb"><code>23f4b27</code></a>
Update changelog.</li>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/291a04f49566054bb19644aba27c3799ac8b7f42"><code>291a04f</code></a>
Bump test deps and trim config.</li>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/08f1101455ba293dda388fdb3b61e62fd95a827d"><code>08f1101</code></a>
Add <code>--cov-precision</code> option. Close <a
href="https://redirect.github.com/pytest-dev/pytest-cov/issues/655">#655</a>.</li>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/76fe2a7e48e5c9c53644994c5ba5a421c84286f5"><code>76fe2a7</code></a>
Move the warnings/errors in a place that doesn't import anything.</li>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/a9ea7b71711479d4c5ccc5e21e2eb1694b259cb0"><code>a9ea7b7</code></a>
Implement error/warning for the bad dynamic_context being set in
config.</li>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/c299e01b6422284a6a7f7322e6b9bf8f44aa3c25"><code>c299e01</code></a>
Add explicit suffixing to make it easier to see the identify the
sources/usag...</li>
<li><a
href="https://github.com/pytest-dev/pytest-cov/commit/c87e54643ef696ed2b0e2b9a4209581da8467fcb"><code>c87e546</code></a>
Add reproducer for weird xdist dynamic_context interaction. Ref <a
href="https://redirect.github.com/pytest-dev/pytest-cov/issues/604">#604</a>.</li>
<li>Additional commits viewable in <a
href="https://github.com/pytest-dev/pytest-cov/compare/v4.0.0...v6.0.0">compare
view</a></li>
</ul>
</details>
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Diff for: backend/Pipfile

@@ -39,7 +39,7 @@ pluggy = "1.5.0"
 pylint = "3.3.1"
 pytest = "8.3.4"
 pytest-asyncio = "0.21.2"
-pytest-cov = "4.0.0"
+pytest-cov = "6.0.0"
 pytest-xdist = "3.6.1"
 ruff = "0.9.1"
 vulture = "2.14"