Bump virtualenv from 20.10.0 to 20.11.0 in /.github/workflows (#127)

Bumps [virtualenv](https://github.com/pypa/virtualenv) from 20.10.0 to 20.11.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/pypa/virtualenv/blob/main/docs/changelog.rst">virtualenv's changelog</a>.</em></p>
<blockquote>
<h2>v20.11.0 (2021-12-28)</h2>
<p>Features - 20.11.0</p>
<pre><code>- Avoid deprecation warning from py-filelock argument - by :user:`ofek`. (`[#2237](pypa/virtualenv#2237) &lt;https://github.com/pypa/virtualenv/issues/2237&gt;`_)
- Upgrade embedded setuptools to ``61.1.0`` from ``58.3.0`` - by :user:`gaborbernat`. (`[#2240](pypa/virtualenv#2240) &lt;https://github.com/pypa/virtualenv/issues/2240&gt;`_)
- Drop the runtime dependency of ``backports.entry-points-selectable`` - by :user:`hroncok`. (`[#2246](pypa/virtualenv#2246) &lt;https://github.com/pypa/virtualenv/issues/2246&gt;`_)
- Fish: PATH variables should not be quoted when being set - by :user:`hroncok`. (`[#2248](pypa/virtualenv#2248) &lt;https://github.com/pypa/virtualenv/issues/2248&gt;`_)
</code></pre>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/pypa/virtualenv/commit/72106af48f00936b50160ad9f7a921c91508c983"><code>72106af</code></a> release 20.11.0</li>
<li><a href="https://github.com/pypa/virtualenv/commit/592420e9011ace2b019ac1d833e507724a0f19aa"><code>592420e</code></a> Add changelog</li>
<li><a href="https://github.com/pypa/virtualenv/commit/878c6e09ded9b8e25a18ced1e04ba53075f2b5d2"><code>878c6e0</code></a> Fix the CI (<a href="https://github-redirect.dependabot.com/pypa/virtualenv/issues/2254">#2254</a>)</li>
<li><a href="https://github.com/pypa/virtualenv/commit/ba3541c84a28cb03b42725b3e38bd08526e4768a"><code>ba3541c</code></a> Bump embeded wheels (<a href="https://github-redirect.dependabot.com/pypa/virtualenv/issues/2252">#2252</a>)</li>
<li><a href="https://github.com/pypa/virtualenv/commit/abc655e428cd9a1070ee6ced2a83afcc3f972aa9"><code>abc655e</code></a> [pre-commit.ci] pre-commit autoupdate (<a href="https://github-redirect.dependabot.com/pypa/virtualenv/issues/2242">#2242</a>)</li>
<li><a href="https://github.com/pypa/virtualenv/commit/bb82a73b6dbf577874f6d4bfaf72d2a7f59dfffe"><code>bb82a73</code></a> Use 'selectable' interface for entry points only when available (<a href="https://github-redirect.dependabot.com/pypa/virtualenv/issues/2246">#2246</a>)</li>
<li><a href="https://github.com/pypa/virtualenv/commit/12a1fc2860761a9cd47c88a24093455d121570a3"><code>12a1fc2</code></a> Properly hide PEP-632 warning on latest version of <code>setuptools</code> (<a href="https://github-redirect.dependabot.com/pypa/virtualenv/issues/2251">#2251</a>)</li>
<li><a href="https://github.com/pypa/virtualenv/commit/1431befa9373225d375d03dcd3aa2b83d51f7a62"><code>1431bef</code></a> fish: PATH variables should not be quoted when being set (<a href="https://github-redirect.dependabot.com/pypa/virtualenv/issues/2248">#2248</a>)</li>
<li><a href="https://github.com/pypa/virtualenv/commit/1f1fdc9a0a5b7af0faf5e6c684d34dfcbf69b61f"><code>1f1fdc9</code></a> Avoid a new deprecation warning from filelock dependency (<a href="https://github-redirect.dependabot.com/pypa/virtualenv/issues/2237">#2237</a>)</li>
<li><a href="https://github.com/pypa/virtualenv/commit/bf5691502d72fba98b2b65a65116dfe94687ea23"><code>bf56915</code></a> Update check.yml</li>
<li>Additional commits viewable in <a href="https://github.com/pypa/virtualenv/compare/20.10.0...20.11.0">compare view</a></li>
</ul>
</details>
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.github/workflows/constraints.txt

@@ -2,4 +2,4 @@ pip==21.3.1
 nox==2021.10.1
 nox-poetry==0.9.0
 poetry==1.1.11
-virtualenv==20.10.0
+virtualenv==20.11.0