Bump pip from 21.2.1 to 21.2.2 (PR #3152)

Bumps [pip](https://github.com/pypa/pip) from 21.2.1 to 21.2.2.
<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>21.2.2 (2021-07-31)</h1>
<h2>Bug Fixes</h2>
<ul>
<li>New resolver: When a package is specified with extras in constraints, and with
extras in non-constraint requirements, the resolver now correctly identifies the
constraint's existence and avoids backtracking. (<code>[#10233](pypa/pip#10233) &lt;https://github.com/pypa/pip/issues/10233&gt;</code>_)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/pypa/pip/commit/f7d912a21902d11448d8fb19cbb84ba1854bcdc4"><code>f7d912a</code></a> Bump for release</li>
<li><a href="https://github.com/pypa/pip/commit/c7f3f197685d074855cfcd8e92234e7b93af3d3f"><code>c7f3f19</code></a> Update AUTHORS.txt</li>
<li><a href="https://github.com/pypa/pip/commit/08eee0b1c0b4805e7a2963e5b455fd7d22adf283"><code>08eee0b</code></a> Correctly normalize relative paths for 'pip show'</li>
<li><a href="https://github.com/pypa/pip/commit/aaba4997e4f6084bd9f0a360b39c14c0f1bd0278"><code>aaba499</code></a> Post a deprecation warning for distutils configs</li>
<li><a href="https://github.com/pypa/pip/commit/a2cbacfe1cb0a8c1a149385a819e39d4c1bd6eee"><code>a2cbacf</code></a> Respect the base's constraint for extra-ed package</li>
<li><a href="https://github.com/pypa/pip/commit/3d7b9c50342b1b0d4cba96016dcf82970d902d62"><code>3d7b9c5</code></a> Correctly ignore osx_framework_user mismatches</li>
<li><a href="https://github.com/pypa/pip/commit/5fc6d16050adbb8ad17f399b332de1fdad6c769d"><code>5fc6d16</code></a> Suppress location warning on abiflag differences</li>
<li><a href="https://github.com/pypa/pip/commit/cc5563e25172372f26de17663951c7b76223ab69"><code>cc5563e</code></a> Kill location warning on Deb and RH system Python</li>
<li><a href="https://github.com/pypa/pip/commit/ec41e0ca0c32688b42ed3bcded5c3d0cf3c12c4f"><code>ec41e0c</code></a> Patch tenacity to quote typing.NoReturn</li>
<li><a href="https://github.com/pypa/pip/commit/8a38cc61555673353952e260ff4b3ca9168c47ab"><code>8a38cc6</code></a> Fix broken link in <code>README.rst</code></li>
<li>Additional commits viewable in <a href="https://github.com/pypa/pip/compare/21.2.1...21.2.2">compare view</a></li>
</ul>
</details>
<br />

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</details>

changelogs/unreleased/3152-dependabot.yml

@@ -0,0 +1,5 @@
+change-type: patch
+description: Bump pip from 21.2.1 to 21.2.2
+destination-branches:
+- master
+sections: {}

requirements.txt

@@ -12,7 +12,7 @@ jinja2==3.0.1
 more-itertools==8.8.0
 netifaces==0.11.0
 packaging==21.0
-pip==21.2.1
+pip==21.2.2
 ply==3.11
 pydantic==1.8.2
 pyformance==0.4