Bump rexml from 3.3.7 to 3.3.8 (#3959)

Bumps [rexml](https://github.com/ruby/rexml) from 3.3.7 to 3.3.8.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/ruby/rexml/releases">rexml's
releases</a>.</em></p>
<blockquote>
<h2>REXML 3.3.8 - 2024-09-29</h2>
<h3>Improvements</h3>
<ul>
<li>SAX2: Improve parse performance.
<ul>
<li><a
href="https://redirect.github.com/ruby/rexml/issues/207">GH-207</a></li>
<li>Patch by NAITOH Jun.</li>
</ul>
</li>
</ul>
<h3>Fixes</h3>
<ul>
<li>Fixed a bug that unexpected attribute namespace conflict error for
the predefined &quot;xml&quot; namespace is reported.
<ul>
<li><a
href="https://redirect.github.com/ruby/rexml/issues/208">GH-208</a></li>
<li>Patch by KITAITI Makoto</li>
</ul>
</li>
</ul>
<h3>Thanks</h3>
<ul>
<li>
<p>NAITOH Jun</p>
</li>
<li>
<p>KITAITI Makoto</p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/ruby/rexml/blob/master/NEWS.md">rexml's
changelog</a>.</em></p>
<blockquote>
<h2>3.3.8 - 2024-09-29 {#version-3-3-8}</h2>
<h3>Improvements</h3>
<ul>
<li>SAX2: Improve parse performance.
<ul>
<li><a
href="https://redirect.github.com/ruby/rexml/issues/207">GH-207</a></li>
<li>Patch by NAITOH Jun.</li>
</ul>
</li>
</ul>
<h3>Fixes</h3>
<ul>
<li>Fixed a bug that unexpected attribute namespace conflict error for
the predefined &quot;xml&quot; namespace is reported.
<ul>
<li><a
href="https://redirect.github.com/ruby/rexml/issues/208">GH-208</a></li>
<li>Patch by KITAITI Makoto</li>
</ul>
</li>
</ul>
<h3>Thanks</h3>
<ul>
<li>
<p>NAITOH Jun</p>
</li>
<li>
<p>KITAITI Makoto</p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ruby/rexml/commit/036d50851ce091c797db0b9ba3ed8e5a39c3918c"><code>036d508</code></a>
test: avoid using needless non ASCII characters</li>
<li><a
href="https://github.com/ruby/rexml/commit/4197054a19e65511fb51983518a134a5c65aa840"><code>4197054</code></a>
Add 3.3.8 entry</li>
<li><a
href="https://github.com/ruby/rexml/commit/78f8712dccad773a51dc5eef31c02d523e994570"><code>78f8712</code></a>
Fix handling with &quot;xml:&quot; prefixed namespace (<a
href="https://redirect.github.com/ruby/rexml/issues/208">#208</a>)</li>
<li><a
href="https://github.com/ruby/rexml/commit/2e1cd64f2f9c0667a840a0e31f9bb99f9e1c2b33"><code>2e1cd64</code></a>
Optimize SAX2Parser#get_namespace (<a
href="https://redirect.github.com/ruby/rexml/issues/207">#207</a>)</li>
<li><a
href="https://github.com/ruby/rexml/commit/35ee73e0cd125633cfcb53996c0bcb7897e97cd2"><code>35ee73e</code></a>
Bump version</li>
<li>See full diff in <a
href="https://github.com/ruby/rexml/compare/v3.3.7...v3.3.8">compare
view</a></li>
</ul>
</details>
<br />


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Gemfile.lock

@@ -374,7 +374,7 @@ GEM
       rack (>= 1.4)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.3.7)
+    rexml (3.3.8)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)