chore(deps-dev): bump tox from 4.15.1 to 4.16.0 (#587)

Bumps [tox](https://github.com/tox-dev/tox) from 4.15.1 to 4.16.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/tox-dev/tox/releases">tox's
releases</a>.</em></p>
<blockquote>
<h2>4.16.0</h2>
<!-- raw HTML omitted -->
<h2>What's Changed</h2>
<ul>
<li>Fix two small documentation issues by <a
href="https://github.com/srenfo"><code>@​srenfo</code></a> in <a
href="https://redirect.github.com/tox-dev/tox/pull/3297">tox-dev/tox#3297</a></li>
<li>Fix tests after new setuptools by <a
href="https://github.com/gaborbernat"><code>@​gaborbernat</code></a> in
<a
href="https://redirect.github.com/tox-dev/tox/pull/3299">tox-dev/tox#3299</a></li>
<li>Add <code>windir</code> to the default list of <code>pass_env</code>
variables on Windows by <a
href="https://github.com/kurtmckee"><code>@​kurtmckee</code></a> in <a
href="https://redirect.github.com/tox-dev/tox/pull/3303">tox-dev/tox#3303</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/srenfo"><code>@​srenfo</code></a> made
their first contribution in <a
href="https://redirect.github.com/tox-dev/tox/pull/3297">tox-dev/tox#3297</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/tox-dev/tox/compare/4.15.1...4.16.0">https://github.com/tox-dev/tox/compare/4.15.1...4.16.0</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/tox-dev/tox/blob/main/docs/changelog.rst">tox's
changelog</a>.</em></p>
<blockquote>
<h2>v4.16.0 (2024-07-02)</h2>
<p>Bugfixes - 4.16.0</p>
<pre><code>- - Add ``windir`` to the default list of Windows
``pass_env`` environment variables. - by :user:`kurtmckee`
(:issue:`3302`)
<p>Improved Documentation - 4.16.0
</code></pre></p>
<ul>
<li>
<ul>
<li>Fix typo in configuration example and fix broken link to code style
guide. - by :user:<code>srenfo</code> (:issue:<code>3297</code>)</li>
</ul>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/tox-dev/tox/commit/5646274f1a3cb681b70c1eb8470bbadc871ee3fc"><code>5646274</code></a>
release 4.16.0</li>
<li><a
href="https://github.com/tox-dev/tox/commit/b12fa626520aa581e53deca76f622f547cfb3ff0"><code>b12fa62</code></a>
[pre-commit.ci] pre-commit autoupdate (<a
href="https://redirect.github.com/tox-dev/tox/issues/3300">#3300</a>)</li>
<li><a
href="https://github.com/tox-dev/tox/commit/264d44f3e2c97d6ed5cf194cb78a8bde5f80998c"><code>264d44f</code></a>
Add <code>windir</code> to the default list of <code>pass_env</code>
variables on Windows (<a
href="https://redirect.github.com/tox-dev/tox/issues/3303">#3303</a>)</li>
<li><a
href="https://github.com/tox-dev/tox/commit/698f1dd6634c0df9fc56d14be2292e5f0764f15c"><code>698f1dd</code></a>
Fix tests after new setuptools (<a
href="https://redirect.github.com/tox-dev/tox/issues/3299">#3299</a>)</li>
<li><a
href="https://github.com/tox-dev/tox/commit/cf8db09e22a8cad11cc42c78216d4cc74fb63c6a"><code>cf8db09</code></a>
[pre-commit.ci] pre-commit autoupdate (<a
href="https://redirect.github.com/tox-dev/tox/issues/3286">#3286</a>)</li>
<li><a
href="https://github.com/tox-dev/tox/commit/a261614f34f1b1831b986e06af28170b43224537"><code>a261614</code></a>
Fix two small documentation issues (<a
href="https://redirect.github.com/tox-dev/tox/issues/3297">#3297</a>)</li>
<li><a
href="https://github.com/tox-dev/tox/commit/8bf2fbd0ff2da126783049d8f8e23255ed75b375"><code>8bf2fbd</code></a>
Bump pypa/gh-action-pypi-publish from 1.8.14 to 1.9.0 (<a
href="https://redirect.github.com/tox-dev/tox/issues/3295">#3295</a>)</li>
<li>See full diff in <a
href="https://github.com/tox-dev/tox/compare/4.15.1...4.16.0">compare
view</a></li>
</ul>
</details>
<br />


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requirements_dev.txt

@@ -9,7 +9,7 @@ pip>=21.1
 pytest==8.2.2
 pytz>=2021.3
 Sphinx==7.4.0
-tox==4.15.1
+tox==4.16.0
 twine==5.1.1
 watchdog==4.0.1
 wheel==0.43.0