Bump pip from 21.0.1 to 21.3.1 (PR #3429)

Bumps [pip](https://github.com/pypa/pip) from 21.0.1 to 21.3.1.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/pypa/pip/blob/main/NEWS.rst">pip's changelog</a>.</em></p>
<blockquote>
<h1>21.3.1 (2021-10-22)</h1>
<h2>Bug Fixes</h2>
<ul>
<li>Always refuse installing or building projects that have no <code>pyproject.toml</code> nor
<code>setup.py</code>. (<code>[#10531](pypa/pip#10531) &lt;https://github.com/pypa/pip/issues/10531&gt;</code>_)</li>
<li>Tweak running-as-root detection, to check <code>os.getuid</code> if it exists, on Unix-y and non-Linux/non-MacOS machines. (<code>[#10565](pypa/pip#10565) &lt;https://github.com/pypa/pip/issues/10565&gt;</code>_)</li>
<li>When installing projects with a <code>pyproject.toml</code> in editable mode, and the build
backend does not support :pep:<code>660</code>, prepare metadata using
<code>prepare_metadata_for_build_wheel</code> instead of <code>setup.py egg_info</code>. Also, refuse
installing projects that only have a <code>setup.cfg</code> and no <code>setup.py</code> nor
<code>pyproject.toml</code>. These restore the pre-21.3 behaviour. (<code>[#10573](pypa/pip#10573) &lt;https://github.com/pypa/pip/issues/10573&gt;</code>_)</li>
<li>Restore compatibility of where configuration files are loaded from on MacOS (back to <code>Library/Application Support/pip</code>, instead of <code>Preferences/pip</code>). (<code>[#10585](pypa/pip#10585) &lt;https://github.com/pypa/pip/issues/10585&gt;</code>_)</li>
</ul>
<h2>Vendored Libraries</h2>
<ul>
<li>Upgrade pep517 to 0.12.0</li>
</ul>
<h1>21.3 (2021-10-11)</h1>
<h2>Deprecations and Removals</h2>
<ul>
<li>Improve deprecation warning regarding the copying of source trees when installing from a local directory. (<code>[#10128](pypa/pip#10128) &lt;https://github.com/pypa/pip/issues/10128&gt;</code>_)</li>
<li>Suppress location mismatch warnings when pip is invoked from a Python source
tree, so <code>ensurepip</code> does not emit warnings on CPython <code>make install</code>. (<code>[#10270](pypa/pip#10270) &lt;https://github.com/pypa/pip/issues/10270&gt;</code>_)</li>
<li>On Python 3.10 or later, the installation scheme backend has been changed to use
<code>sysconfig</code>. This is to anticipate the deprecation of <code>distutils</code> in Python
3.10, and its scheduled removal in 3.12. For compatibility considerations, pip
installations running on Python 3.9 or lower will continue to use <code>distutils</code>. (<code>[#10358](pypa/pip#10358) &lt;https://github.com/pypa/pip/issues/10358&gt;</code>_)</li>
<li>Remove the <code>--build-dir</code> option and aliases, one last time. (<code>[#10485](pypa/pip#10485) &lt;https://github.com/pypa/pip/issues/10485&gt;</code>_)</li>
<li>In-tree builds are now the default. <code>--use-feature=in-tree-build</code> is now
ignored. <code>--use-deprecated=out-of-tree-build</code> may be used temporarily to ease
the transition. (<code>[#10495](pypa/pip#10495) &lt;https://github.com/pypa/pip/issues/10495&gt;</code>_)</li>
<li>Un-deprecate source distribution re-installation behaviour. (<code>[#8711](pypa/pip#8711) &lt;https://github.com/pypa/pip/issues/8711&gt;</code>_)</li>
</ul>
<h2>Features</h2>
<ul>
<li>Replace vendored appdirs with platformdirs. (<code>[#10202](pypa/pip#10202) &lt;https://github.com/pypa/pip/issues/10202&gt;</code>_)</li>
<li>Support <code>PEP 610 &lt;https://www.python.org/dev/peps/pep-0610/&gt;</code>_ to detect
editable installs in <code>pip freeze</code> and  <code>pip list</code>. The <code>pip list</code> column output</li>
</ul>
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</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/pypa/pip/commit/f9914f3ebe223004b1d439a2b1980bd132d14f27"><code>f9914f3</code></a> Bump for release</li>
<li><a href="https://github.com/pypa/pip/commit/f9f2db248fc04b46bd0149eba92882e4932c627e"><code>f9f2db2</code></a> Update AUTHORS.txt</li>
<li><a href="https://github.com/pypa/pip/commit/f2d776be2adffee700ef4563893dc01dc231125c"><code>f2d776b</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10607">#10607</a> from pradyunsg/fix-docs-builds</li>
<li><a href="https://github.com/pypa/pip/commit/4a4b613a7ccdf4c4aab8f223f9b97f413b8b3056"><code>4a4b613</code></a> Merge PR <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10577">#10577</a> from sbidoul/fix-pep660-metadata-preparation-fallback</li>
<li><a href="https://github.com/pypa/pip/commit/f4d67ba0c091c5b02096ddb211c7602bf0d95580"><code>f4d67ba</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10592">#10592</a> from pradyunsg/update-ewdurbin-name</li>
<li><a href="https://github.com/pypa/pip/commit/37aef106a325ed7b1115f04028360e03dbfe7ee8"><code>37aef10</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10536">#10536</a> from pradyunsg/docs/fix-wordin</li>
<li><a href="https://github.com/pypa/pip/commit/457564cf38ad5da75672d4de119e4c5ae19fbd56"><code>457564c</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10585">#10585</a> from pradyunsg/fix-config-paths</li>
<li><a href="https://github.com/pypa/pip/commit/8c1f333ba5cb0a8c2cc4c775355bdde4ae06e50f"><code>8c1f333</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10580">#10580</a> from pradyunsg/better-towncrier-template</li>
<li><a href="https://github.com/pypa/pip/commit/cc559ed6237f7461c919d403c93fbc2ac82abe09"><code>cc559ed</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10583">#10583</a> from pradyunsg/fix-vendoring</li>
<li><a href="https://github.com/pypa/pip/commit/0c2574b7ef78791dd98822bca038b6d839b5378c"><code>0c2574b</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pypa/pip/issues/10566">#10566</a> from n1000/dont_warn_on_bsd</li>
<li>Additional commits viewable in <a href="https://github.com/pypa/pip/compare/21.0.1...21.3.1">compare view</a></li>
</ul>
</details>
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changelogs/unreleased/3429-dependabot.yml

@@ -0,0 +1,5 @@
+change-type: patch
+description: Bump pip from 21.0.1 to 21.3.1
+destination-branches:
+- iso4
+sections: {}

requirements.txt

@@ -12,7 +12,7 @@ jinja2==3.0.3
 more-itertools==8.7.0
 netifaces==0.10.9
 packaging==21.2
-pip==21.0.1
+pip==21.3.1
 ply==3.11
 pydantic==1.8.1
 pyformance==0.4