Bump sphinx-click from 3.0.3 to 3.1.0 (#176)

Bumps [sphinx-click](https://github.com/stephenfin/sphinx-click) from 3.0.3 to 3.1.0.
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/click-contrib/sphinx-click/commit/7b170627729fb1583500e0e0cbfe538682ffda9f"><code>7b17062</code></a> Display 'show_default' string even when 'default=None'</li>
<li><a href="https://github.com/click-contrib/sphinx-click/commit/b9ce52d554c6a6fcf808cd77fc561954a8b9833f"><code>b9ce52d</code></a> docs: Improve information on cross-referencing</li>
<li><a href="https://github.com/click-contrib/sphinx-click/commit/c2b72c3d02f7c2d768cd3591c0aa66f3ff13ad0c"><code>c2b72c3</code></a> docs: Update URLs</li>
<li><a href="https://github.com/click-contrib/sphinx-click/commit/815a2def18dc8c0ee790665d09e9614ed414c5e2"><code>815a2de</code></a> setup: Switch from hyphens to underscores</li>
<li>See full diff in <a href="https://github.com/stephenfin/sphinx-click/compare/3.0.3...3.1.0">compare view</a></li>
</ul>
</details>
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</details>

pyproject.toml

@@ -49,7 +49,7 @@ twine = "3.7.1"
 pytest = "6.2.5"
 pytest-cov = "3.0.0"
 Sphinx = "4.4.0"
-sphinx-click = "3.0.3"
+sphinx-click = "3.1.0"
 sphinx-issues = "3.0.1"
 nbsphinx = "^0.8.8"
 sphinx-rtd-theme = "1.0.0"