chore(deps-dev): Bump json from 2.18.1 to 2.19.2 in /docs (#419)

Bumps [json](https://github.com/ruby/json) from 2.18.1 to 2.19.2.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/ruby/json/releases">json's
releases</a>.</em></p>
<blockquote>
<h2>v2.19.2</h2>
<h2>What's Changed</h2>
<ul>
<li>Fix a format string injection vulnerability in <code>JSON.parse(doc,
allow_duplicate_key: false)</code>. <code>CVE-2026-33210</code></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/ruby/json/compare/v2.19.1...v2.19.2">https://github.com/ruby/json/compare/v2.19.1...v2.19.2</a></p>
<h2>v2.19.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Fix a compiler dependent GC bug introduced in
<code>2.18.0</code>.</li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/ruby/json/compare/v2.19.0...v2.19.1">https://github.com/ruby/json/compare/v2.19.0...v2.19.1</a></p>
<h2>v2.19.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Fix <code>allow_blank</code> parsing option to no longer allow
invalid types (e.g. <code>load([], allow_blank: true)</code> now raise a
type error).</li>
<li>Add <code>allow_invalid_escape</code> parsing option to ignore
backslashes that aren't followed by one of the valid escape
characters.</li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/ruby/json/compare/v2.18.1...v2.19.0">https://github.com/ruby/json/compare/v2.18.1...v2.19.0</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/ruby/json/blob/master/CHANGES.md">json's
changelog</a>.</em></p>
<blockquote>
<h3>2026-03-18 (2.19.2)</h3>
<ul>
<li>Fix a format string injection vulnerability in <code>JSON.parse(doc,
allow_duplicate_key: false)</code>. <code>CVE-2026-33210</code>.</li>
</ul>
<h3>2026-03-08 (2.19.1)</h3>
<ul>
<li>Fix a compiler dependent GC bug introduced in
<code>2.18.0</code>.</li>
</ul>
<h3>2026-03-06 (2.19.0)</h3>
<ul>
<li>Fix <code>allow_blank</code> parsing option to no longer allow
invalid types (e.g. <code>load([], allow_blank: true)</code> now raise a
type error).</li>
<li>Add <code>allow_invalid_escape</code> parsing option to ignore
backslashes that aren't followed by one of the valid escape
characters.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ruby/json/commit/54f8a878aebee090476a53c851c943128894be62"><code>54f8a87</code></a>
Release 2.19.2</li>
<li><a
href="https://github.com/ruby/json/commit/393b41c3e5f87491e1e34fa59fa78ff6fa179a74"><code>393b41c</code></a>
Fix a format string injection vulnerability</li>
<li><a
href="https://github.com/ruby/json/commit/dbf6bb12aac85db939df1180028aea06c8d3b762"><code>dbf6bb1</code></a>
Merge pull request <a
href="https://redirect.github.com/ruby/json/issues/953">#953</a> from
ruby/dependabot/github_actions/actions/create-gi...</li>
<li><a
href="https://github.com/ruby/json/commit/7187315b4571ade59d68a1fad84be2794cda744d"><code>7187315</code></a>
Bump actions/create-github-app-token from 2 to 3</li>
<li><a
href="https://github.com/ruby/json/commit/4a42a04280d96d8dd94558078c16f1c078c38e1b"><code>4a42a04</code></a>
Release 2.19.1</li>
<li><a
href="https://github.com/ruby/json/commit/13689c269970f18316952541f8544830ec2dc5c4"><code>13689c2</code></a>
Add missing GC_GUARD in <code>fbuffer_append_str</code></li>
<li><a
href="https://github.com/ruby/json/commit/a11acc1ff496627e5d72c71d6d1229e8c8ffeaa1"><code>a11acc1</code></a>
Release 2.19.0</li>
<li><a
href="https://github.com/ruby/json/commit/0a4fb79cd97f535701cc2240ac736d76b9af5025"><code>0a4fb79</code></a>
fbuffer.h: Use size_t over unsigned long</li>
<li><a
href="https://github.com/ruby/json/commit/a29fcdcb4a78164daa14f6af05812690dd3ac939"><code>a29fcdc</code></a>
Add depth validation to Jruby and TruffleRuby implementations</li>
<li><a
href="https://github.com/ruby/json/commit/de993aa76639078da891f46351a36f77d51ad3d3"><code>de993aa</code></a>
Reject negative depth; add overflow guards to prevent hang/crash</li>
<li>Additional commits viewable in <a
href="https://github.com/ruby/json/compare/v2.18.1...v2.19.2">compare
view</a></li>
</ul>
</details>
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docs/Gemfile.lock

@@ -208,7 +208,7 @@ GEM
       gemoji (>= 3, < 5)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
-    json (2.18.1)
+    json (2.19.2)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)