chore(deps-dev): bump addressable from 2.8.8 to 2.9.0 in /docs in the bundler group across 1 directory (google#5213)

Bumps the bundler group with 1 update in the /docs directory:
[addressable](https://github.com/sporkmonger/addressable).

Updates `addressable` from 2.8.8 to 2.9.0
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/sporkmonger/addressable/blob/main/CHANGELOG.md">addressable's
changelog</a>.</em></p>
<blockquote>
<h2>Addressable 2.9.0 <!-- raw HTML omitted --></h2>
<ul>
<li>fixes ReDoS vulnerability in Addressable::Template#match (fixes
incomplete
remediation in 2.8.10)</li>
</ul>
<h2>Addressable 2.8.10 <!-- raw HTML omitted --></h2>
<ul>
<li>fixes ReDoS vulnerability in Addressable::Template#match</li>
</ul>
<h2>Addressable 2.8.9 <!-- raw HTML omitted --></h2>
<ul>
<li>Reduce gem size by excluding test files (<a
href="https://redirect.github.com/sporkmonger/addressable/issues/569">#569</a>)</li>
<li>No need for bundler as development dependency (<a
href="https://redirect.github.com/sporkmonger/addressable/issues/571">#571</a>,
<a
href="https://github.com/sporkmonger/addressable/commit/5fc1d93">5fc1d93</a>)</li>
<li>idna/pure: stop building the useless <code>COMPOSITION_TABLE</code>
(removes the <code>Addressable::IDNA::COMPOSITION_TABLE</code> constant)
(<a
href="https://redirect.github.com/sporkmonger/addressable/issues/564">#564</a>)</li>
</ul>
<p><a
href="https://redirect.github.com/sporkmonger/addressable/issues/569">#569</a>:
<a
href="https://redirect.github.com/sporkmonger/addressable/pull/569">sporkmonger/addressable#569</a>
<a
href="https://redirect.github.com/sporkmonger/addressable/issues/571">#571</a>:
<a
href="https://redirect.github.com/sporkmonger/addressable/pull/571">sporkmonger/addressable#571</a>
<a
href="https://redirect.github.com/sporkmonger/addressable/issues/564">#564</a>:
<a
href="https://redirect.github.com/sporkmonger/addressable/pull/564">sporkmonger/addressable#564</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/sporkmonger/addressable/commit/0c3e8589b23d4402903a9b4e1fdeba4e43c52ca4"><code>0c3e858</code></a>
Revving version and changelog</li>
<li><a
href="https://github.com/sporkmonger/addressable/commit/91915c1f7aafa3e2c9f42e2f4e21d948c7a861b8"><code>91915c1</code></a>
Fixing additional vulnerable paths</li>
<li><a
href="https://github.com/sporkmonger/addressable/commit/a091e39ff02fc321b21dea3a0df585bef2ba3744"><code>a091e39</code></a>
Add many more adversarial test cases to ensure we don't have any ReDoS
regres...</li>
<li><a
href="https://github.com/sporkmonger/addressable/commit/463a819665a3b85ce5ce894c90bd7bfa3b9d2e15"><code>463a819</code></a>
Regenerate gemspec on newer rubygems</li>
<li><a
href="https://github.com/sporkmonger/addressable/commit/0afcb0b9672bee301e5e96ed850fec05b2fcabb0"><code>0afcb0b</code></a>
Improve from O(n^2) to O(n)</li>
<li><a
href="https://github.com/sporkmonger/addressable/commit/c87f768f22ab00376ed2f8cb106f59c9d0652d3a"><code>c87f768</code></a>
Fix a ReDoS vulnerability in URI template matching</li>
<li><a
href="https://github.com/sporkmonger/addressable/commit/0d7e9b259fb0940d1a85064b04f678a7984409a5"><code>0d7e9b2</code></a>
Fix links for 2.8.9 in CHANGELOG (<a
href="https://redirect.github.com/sporkmonger/addressable/issues/573">#573</a>)</li>
<li><a
href="https://github.com/sporkmonger/addressable/commit/e2091200b31553f19248eb871f071852409796f8"><code>e209120</code></a>
Update version, gemspec, and CHANGELOG for 2.8.9 (<a
href="https://redirect.github.com/sporkmonger/addressable/issues/572">#572</a>)</li>
<li><a
href="https://github.com/sporkmonger/addressable/commit/387587492b6536748ed12a11c3fdb44a48885f28"><code>3875874</code></a>
Reduce gem size by excluding test files (<a
href="https://redirect.github.com/sporkmonger/addressable/issues/569">#569</a>)</li>
<li><a
href="https://github.com/sporkmonger/addressable/commit/3e57cc6018f94231aabb47fd341acd1b40f1e71a"><code>3e57cc6</code></a>
CI: back to <code>windows-2022</code> for MRI job</li>
<li>Additional commits viewable in <a
href="https://github.com/sporkmonger/addressable/compare/addressable-2.8.8...addressable-2.9.0">compare
view</a></li>
</ul>
</details>
<br />


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docs/Gemfile.lock

@@ -14,7 +14,7 @@ GEM
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
       uri (>= 0.13.1)
-    addressable (2.8.8)
+    addressable (2.9.0)
       public_suffix (>= 2.0.2, < 8.0)
     base64 (0.3.0)
     bigdecimal (4.0.1)