Bump urllib3 from 1.26.2 to 1.26.5 in /2021#11

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.2 to 1.26.5. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/urllib3/urllib3/releases">urllib3's releases</a>.</em></p> <blockquote> <h2>1.26.5</h2> <p>:warning: <strong>IMPORTANT: urllib3 v2.0 will drop support for Python 2</strong>: <a href="https://urllib3.readthedocs.io/en/latest/v2-roadmap.html">Read more in the v2.0 Roadmap</a></p> <ul> <li>Fixed deprecation warnings emitted in Python 3.10.</li> <li>Updated vendored <code>six</code> library to 1.16.0.</li> <li>Improved performance of URL parser when splitting the authority component.</li> </ul> <p><strong>If you or your organization rely on urllib3 consider supporting us via <a href="https://github.com/sponsors/urllib3">GitHub Sponsors</a></strong></p> <h2>1.26.4</h2> <p>:warning: <strong>IMPORTANT: urllib3 v2.0 will drop support for Python 2</strong>: <a href="https://urllib3.readthedocs.io/en/latest/v2-roadmap.html">Read more in the v2.0 Roadmap</a></p> <ul> <li>Changed behavior of the default <code>SSLContext</code> when connecting to HTTPS proxy during HTTPS requests. The default <code>SSLContext</code> now sets <code>check_hostname=True</code>.</li> </ul> <p><strong>If you or your organization rely on urllib3 consider supporting us via <a href="https://github.com/sponsors/urllib3">GitHub Sponsors</a></strong></p> <h2>1.26.3</h2> <p>:warning: <strong>IMPORTANT: urllib3 v2.0 will drop support for Python 2</strong>: <a href="https://urllib3.readthedocs.io/en/latest/v2-roadmap.html">Read more in the v2.0 Roadmap</a></p> <ul> <li> <p>Fixed bytes and string comparison issue with headers (Pull <a href="https://github-redirect.dependabot.com/urllib3/urllib3/issues/2141">#2141</a>)</p> </li> <li> <p>Changed <code>ProxySchemeUnknown</code> error message to be more actionable if the user supplies a proxy URL without a scheme (Pull <a href="https://github-redirect.dependabot.com/urllib3/urllib3/issues/2107">#2107</a>)</p> </li> </ul> <p><strong>If you or your organization rely on urllib3 consider supporting us via <a href="https://github.com/sponsors/urllib3">GitHub Sponsors</a></strong></p> </blockquote> </details> <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/urllib3/urllib3/blob/main/CHANGES.rst">urllib3's changelog</a>.</em></p> <blockquote> <h1>1.26.5 (2021-05-26)</h1> <ul> <li>Fixed deprecation warnings emitted in Python 3.10.</li> <li>Updated vendored <code>six</code> library to 1.16.0.</li> <li>Improved performance of URL parser when splitting the authority component.</li> </ul> <h1>1.26.4 (2021-03-15)</h1> <ul> <li>Changed behavior of the default <code>SSLContext</code> when connecting to HTTPS proxy during HTTPS requests. The default <code>SSLContext</code> now sets <code>check_hostname=True</code>.</li> </ul> <h1>1.26.3 (2021-01-26)</h1> <ul> <li> <p>Fixed bytes and string comparison issue with headers (Pull <a href="https://github-redirect.dependabot.com/urllib3/urllib3/issues/2141">#2141</a>)</p> </li> <li> <p>Changed <code>ProxySchemeUnknown</code> error message to be more actionable if the user supplies a proxy URL without a scheme. (Pull <a href="https://github-redirect.dependabot.com/urllib3/urllib3/issues/2107">#2107</a>)</p> </li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/urllib3/urllib3/commit/d1616473df94b94f0f5ad19d2a6608cfe93b7cdf"><code>d161647</code></a> Release 1.26.5</li> <li><a href="https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec"><code>2d4a3fe</code></a> Improve performance of sub-authority splitting in URL</li> <li><a href="https://github.com/urllib3/urllib3/commit/2698537d52f8ff1f0bbb1d45cf018b118e91f637"><code>2698537</code></a> Update vendored six to 1.16.0</li> <li><a href="https://github.com/urllib3/urllib3/commit/07bed791e9c391d8bf12950f76537dc3c6f90550"><code>07bed79</code></a> Fix deprecation warnings for Python 3.10 ssl module</li> <li><a href="https://github.com/urllib3/urllib3/commit/d725a9b56bb8baf87c9e6eee0e9edf010034b63b"><code>d725a9b</code></a> Add Python 3.10 to GitHub Actions</li> <li><a href="https://github.com/urllib3/urllib3/commit/339ad34c677c98fd9ad008de1d8bbeb9dbf34381"><code>339ad34</code></a> Use pytest==6.2.4 on Python 3.10+</li> <li><a href="https://github.com/urllib3/urllib3/commit/f271c9c3149e20d7feffb6429b135bbb6c09ddf4"><code>f271c9c</code></a> Apply latest Black formatting</li> <li><a href="https://github.com/urllib3/urllib3/commit/1884878aac87ef0494b282e940c32c24ee917d52"><code>1884878</code></a> [1.26] Properly proxy EOF on the SSLTransport test suite</li> <li><a href="https://github.com/urllib3/urllib3/commit/a8913042b676c510e94fc2b097f6b514ae11a537"><code>a891304</code></a> Release 1.26.4</li> <li><a href="https://github.com/urllib3/urllib3/commit/8d65ea1ecf6e2cdc27d42124e587c1b83a3118b0"><code>8d65ea1</code></a> Merge pull request from GHSA-5phf-pp7p-vc2r</li> <li>Additional commits viewable in <a href="https://github.com/urllib3/urllib3/compare/1.26.2...1.26.5">compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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