chore(deps-dev): update tox requirement from ~=3.26 to ~=4.2

[dependabot]

Updates the requirements on tox to permit the latest version.

Release notes

Sourced from tox's releases.

4.2.1

What's Changed

• update how extras are extracted to handle cases with more than 2 groups by @​dconathan in tox-dev/tox#2812

New Contributors

• @​dconathan made their first contribution in tox-dev/tox#2812

Full Changelog: tox-dev/tox@4.2.0...4.2.1

Changelog

Sourced from tox's changelog.

v4.2.1 (2023-01-03)

Bugfixes - 4.2.1

- Fix extracting extras from markers with more than 2 extras in an or chain - by :user:`dconathan`. (:issue:`2791`)
v4.2.0 (2023-01-03)
Features - 4.2.0

• Packaging environments now inherit from the pkgenv section, allowing to set all your packaging options in one place, and support the deps key to set additional dependencies that will be installed after pyproject.toml static requires but before backends dynamic requires - by :user:gaborbernat. (:issue:2543)

Improved Documentation - 4.2.0

- Document breaking changes with tox 4 and packaging environments - by :user:`gaborbernat`. (:issue:`2543`)
- Document how to handle environments whose names match ``tox`` subcommands - by :user:`sirosen`. (:issue:`2728`)
v4.1.3 (2023-01-02)
Bugfixes - 4.1.3
- Reuse package_env with ``--installpkg`` - by :user:`q0w`. (:issue:`2442`)
- Fail more gracefully when pip :ref:`install_command` is empty - by :user:`jayaddison`. (:issue:`2695`)
Improved Documentation - 4.1.3

</code></pre>

<ul>

<li>Add breaking-change documentation for empty <code>install_command</code> values - by :user:<code>jayaddison</code>. (:issue:<code>2695</code>)</li>

</ul>

<p>Misc - 4.1.3</p>

<pre><code>- :issue:2796, :issue:2797
v4.1.2 (2022-12-30)
Bugfixes - 4.1.2

</code></pre>

<ul>

<li>Fix <code>--skip-missing-interpreters</code> behaviour - by :user:<code>q0w</code>. (:issue:<code>2649</code>)</li>

<li>Restore tox 3 behaviour of showing the output of pip freeze, however now only active when running inside a CI

environment - by :user:<code>gaborbernat</code>. (:issue:<code>2685</code>)</li>

<li>Fix extracting extras from markers with many extras - by :user:<code>q0w</code>. (:issue:<code>2791</code>)</li>

</ul>

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</details>

<details>

<summary>Commits</summary>
<ul>

<li><a href="https://github.com/tox-dev/tox/commit/43382af3a228c4dfc098ec50e136971553ee0035&quot;&gt;&lt;code&gt;43382af&lt;/code&gt;&lt;/a> release 4.2.1</li>

<li><a href="https://github.com/tox-dev/tox/commit/4578eaa45fe5f5f80f08754627be8f4376cf3a97&quot;&gt;&lt;code&gt;4578eaa&lt;/code&gt;&lt;/a> update how extras are extracted to handle cases with more than 2 groups (<a href="https://github-redirect.dependabot.com/tox-dev/tox/issues/2812&quot;&gt;#2812&lt;/a&gt;)&lt;/li>

<li><a href="https://github.com/tox-dev/tox/commit/27c52ec2b77647374b7ff4a82244f0ff489d1afc&quot;&gt;&lt;code&gt;27c52ec&lt;/code&gt;&lt;/a> Update upgrading.rst</li>

<li><a href="https://github.com/tox-dev/tox/commit/2e977fb97a60129eee6764fcf0a4c86e01ceabee&quot;&gt;&lt;code&gt;2e977fb&lt;/code&gt;&lt;/a> Update changelog.rst</li>

<li><a href="https://github.com/tox-dev/tox/commit/d16a666ae31c2fd6d8204c39498758cc529167a3&quot;&gt;&lt;code&gt;d16a666&lt;/code&gt;&lt;/a> release 4.2.0</li>

<li><a href="https://github.com/tox-dev/tox/commit/82dcd45af55af239a7be81ee2e86948c6fe75518&quot;&gt;&lt;code&gt;82dcd45&lt;/code&gt;&lt;/a> Packaging inherits from pkgenv, deps and document tox 4 packaging changes (<a href="https://github-redirect.dependabot.com/tox-dev/tox/issues/2&quot;&gt;#2&lt;/a&gt;...&lt;/li>

<li><a href="https://github.com/tox-dev/tox/commit/31c8d1fc48ccf95f66b2920b356f9490686ccfc7&quot;&gt;&lt;code&gt;31c8d1f&lt;/code&gt;&lt;/a> Document ambiguous usages in v3-to-v4 (<a href="https://github-redirect.dependabot.com/tox-dev/tox/issues/2808&quot;&gt;#2808&lt;/a&gt;)&lt;/li>

<li><a href="https://github.com/tox-dev/tox/commit/031e902822284d65cbeb11b23dd05e6ba5107961&quot;&gt;&lt;code&gt;031e902&lt;/code&gt;&lt;/a> Introduce Upgrading doc page for tox4 (<a href="https://github-redirect.dependabot.com/tox-dev/tox/issues/2805&quot;&gt;#2805&lt;/a&gt;)&lt;/li>

<li><a href="https://github.com/tox-dev/tox/commit/d05ea02b7344766be3eb8046bac8843e10cf43a8&quot;&gt;&lt;code&gt;d05ea02&lt;/code&gt;&lt;/a> release 4.1.3</li>

<li><a href="https://github.com/tox-dev/tox/commit/997128ced47936adabb2f267d2606f8eac253ad3&quot;&gt;&lt;code&gt;997128c&lt;/code&gt;&lt;/a> Better message when command parsing on empty input (<a href="https://github-redirect.dependabot.com/tox-dev/tox/issues/2807&quot;&gt;#2807&lt;/a&gt;)&lt;/li>

<li>Additional commits viewable in <a href="https://github.com/tox-dev/tox/compare/3.26.0...4.2.1&quot;&gt;compare view</a></li>

</ul>

</details>
<br />


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[dependabot]

Superseded by #71.