chore(deps): Bump urllib3 from 2.0.4 to 2.0.6 in /cirrus/server (#9528)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.0.4 to 2.0.6.
<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>2.0.6</h2>
<ul>
<li>Added the <code>Cookie</code> header to the list of headers to strip
from requests when redirecting to a different host. As before, different
headers can be set via <code>Retry.remove_headers_on_redirect</code>.
(GHSA-v845-jxx5-vc9f)</li>
</ul>
<h2>2.0.5</h2>
<ul>
<li>Allowed pyOpenSSL third-party module without any deprecation
warning. <a
href="https://redirect.github.com/urllib3/urllib3/issues/3126">#3126</a></li>
<li>Fixed default <code>blocksize</code> of <code>HTTPConnection</code>
classes to match high-level classes. Previously was 8KiB, now 16KiB. <a
href="https://redirect.github.com/urllib3/urllib3/issues/3066%3E">#3066</a></li>
</ul>
</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>2.0.6 (2023-10-02)</h1>
<ul>
<li>Added the <code>Cookie</code> header to the list of headers to strip
from requests when redirecting to a different host. As before, different
headers can be set via
<code>Retry.remove_headers_on_redirect</code>.</li>
</ul>
<h1>2.0.5 (2023-09-20)</h1>
<ul>
<li>Allowed pyOpenSSL third-party module without any deprecation
warning. (<code>[#3126](urllib3/urllib3#3126)
&lt;https://github.com/urllib3/urllib3/issues/3126&gt;</code>__)</li>
<li>Fixed default <code>blocksize</code> of <code>HTTPConnection</code>
classes to match high-level classes. Previously was 8KiB, now 16KiB.
(<code>[#3066](urllib3/urllib3#3066)
&lt;https://github.com/urllib3/urllib3/issues/3066&gt;</code>__)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/urllib3/urllib3/commit/262e3e332209ee93ff70e2b13502c8f20c105ac8"><code>262e3e3</code></a>
Release 2.0.6</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/644124ecd0b6e417c527191f866daa05a5a2056d"><code>644124e</code></a>
Merge pull request from GHSA-v845-jxx5-vc9f</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/740380c59ca2a7c2dceca19e5dba99f6b7060e62"><code>740380c</code></a>
Bump cryptography from 41.0.3 to 41.0.4 (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3131">#3131</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/d9f85a749488188c286cd50606d159874db94d5f"><code>d9f85a7</code></a>
Release 2.0.5</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/d41f4122966f7f4f5f92001ad518e5d9dafcc886"><code>d41f412</code></a>
Undeprecate pyOpenSSL module (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3127">#3127</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/b6c04cb3e62ef5a0e4947d037c12fb3ca79e024a"><code>b6c04cb</code></a>
Fix a link to &quot;absolute URI&quot; definition (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3128">#3128</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/af7c78fa30f5a4e265911371d0c59b6baeddca0f"><code>af7c78f</code></a>
refactor: change double conditional to one (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3118">#3118</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/34c13c8e68df6f89890ba08b9fc4fbf87ed21669"><code>34c13c8</code></a>
Refer to current internet standards in docs on proxies (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3124">#3124</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/a3e94f218cd8297db73302eadae235f0c832a809"><code>a3e94f2</code></a>
Fix a name of an attribute in docs (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3125">#3125</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/da69d4f4f95bc7ef9307fc8e0499c2121f1e4791"><code>da69d4f</code></a>
Fix docs build (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3123">#3123</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/urllib3/urllib3/compare/2.0.4...2.0.6">compare
view</a></li>
</ul>
</details>
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