Update pytest requirement from <=7.4.3 to <=8.0.0 in /backend (#469)

Updates the requirements on
[pytest](https://github.com/pytest-dev/pytest) to permit the latest
version.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/pytest-dev/pytest/releases">pytest's
releases</a>.</em></p>
<blockquote>
<h2>pytest 8.0.0 (2024-01-27)</h2>
<p>See <a
href="https://github.com/pytest-dev/pytest/releases/tag/8.0.0rc1">8.0.0rc1</a>
and <a
href="https://github.com/pytest-dev/pytest/releases/tag/8.0.0rc2">8.0.0rc2</a>
for the full changes since pytest 7.4!</p>
<h2>Bug Fixes</h2>
<ul>
<li><a
href="https://redirect.github.com/pytest-dev/pytest/issues/11842">#11842</a>:
Properly escape the <code>reason</code> of a <code>skip
&lt;pytest.mark.skip ref&gt;</code>{.interpreted-text
role=&quot;ref&quot;} mark when writing JUnit XML files.</li>
<li><a
href="https://redirect.github.com/pytest-dev/pytest/issues/11861">#11861</a>:
Avoid microsecond exceeds <code>1_000_000</code> when using
<code>log-date-format</code> with <code>%f</code> specifier, which might
cause the test suite to crash.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/pytest-dev/pytest/commit/478f8233bca8147445f0c5129f04ada892cc6c91"><code>478f823</code></a>
Prepare release version 8.0.0</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/608590097a6542768099dd371b84d8b37a1990da"><code>6085900</code></a>
[8.0.x] fix: avoid rounding microsecond to <code>1_000_000</code> (<a
href="https://redirect.github.com/pytest-dev/pytest/issues/11863">#11863</a>)</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/3b41c65c81d649d962be5ec469f44104b8d09748"><code>3b41c65</code></a>
[8.0.x] Escape skip reason in junitxml (<a
href="https://redirect.github.com/pytest-dev/pytest/issues/11845">#11845</a>)</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/747072ad26f2443dc8a62eb88db8cbf56fa95470"><code>747072a</code></a>
[8.0.x] Update docstring of scripts/generate-gh-release-notes.py (<a
href="https://redirect.github.com/pytest-dev/pytest/issues/11768">#11768</a>)</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/011a475baf6e1d0e9ec30c5996d9cbcbe7c95475"><code>011a475</code></a>
Properly attach packages to the GH release notes (<a
href="https://redirect.github.com/pytest-dev/pytest/issues/11839">#11839</a>)
(<a
href="https://redirect.github.com/pytest-dev/pytest/issues/11840">#11840</a>)</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/97960bdd148972b2f26bd9b336163e590bbc4c6b"><code>97960bd</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest/issues/11835">#11835</a>
from pytest-dev/release-8.0.0rc2</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/6be0a3cbf7e014834610139421a0d9804d4a3eae"><code>6be0a3c</code></a>
Prepare release version 8.0.0rc2</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/44ffe071658f5ac609fe8d3b967e8dba93abc819"><code>44ffe07</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest/issues/11837">#11837</a>
from pytest-dev/backport-11836-to-8.0.x</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/14ecb049732bed4dc913e2da55c616882432c978"><code>14ecb04</code></a>
[8.0.x] testing: temporarily disable test due to hypothesis issue</li>
<li><a
href="https://github.com/pytest-dev/pytest/commit/41c8dabee3c40a5d363bf03a3ca2370ee27cbcd0"><code>41c8dab</code></a>
Merge pull request <a
href="https://redirect.github.com/pytest-dev/pytest/issues/11831">#11831</a>
from bluetech/backport-11825-to-8.0.x</li>
<li>Additional commits viewable in <a
href="https://github.com/pytest-dev/pytest/compare/1.0.0b3...8.0.0">compare
view</a></li>
</ul>
</details>
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backend/Pipfile

@@ -35,7 +35,7 @@ aioresponses = ">=0.7.4"
 mypy = ">=1.3.1"
 pluggy = "<=1.3.0"
 pylint = ">=2.15.10"
-pytest = "<=7.4.3"
+pytest = "<=8.0.0"
 pytest-asyncio = "<=0.21.1"
 pytest-cov = ">=4.0.0"
 pytest-xdist = ">=3.2.1"