Bump ruby/setup-ruby from 1.269.0 to 1.270.0 (#564)

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.269.0
to 1.270.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/ruby/setup-ruby/releases">ruby/setup-ruby's
releases</a>.</em></p>
<blockquote>
<h2>v1.270.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Bump actions/checkout from 5 to 6 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>[bot]
in <a
href="https://redirect.github.com/ruby/setup-ruby/pull/830">ruby/setup-ruby#830</a></li>
<li>When setting $JAVA_HOME also add $JAVA_HOME/bin to PATH by <a
href="https://github.com/eregon"><code>@​eregon</code></a> in <a
href="https://redirect.github.com/ruby/setup-ruby/pull/836">ruby/setup-ruby#836</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/ruby/setup-ruby/compare/v1.269.0...v1.270.0">https://github.com/ruby/setup-ruby/compare/v1.269.0...v1.270.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ruby/setup-ruby/commit/ac793fdd38cc468a4dd57246fa9d0e868aba9085"><code>ac793fd</code></a>
When setting $JAVA_HOME also add $JAVA_HOME/bin to PATH</li>
<li><a
href="https://github.com/ruby/setup-ruby/commit/5f8a775744858bcc1e90d5a07a98c082b7a015b8"><code>5f8a775</code></a>
macos-13 is gone</li>
<li><a
href="https://github.com/ruby/setup-ruby/commit/30a65460355413d4f476a54297d4455c9c3f46f4"><code>30a6546</code></a>
Bump actions/checkout from 5 to 6</li>
<li>See full diff in <a
href="https://github.com/ruby/setup-ruby/compare/d697be2f83c6234b20877c3b5eac7a7f342f0d0c...ac793fdd38cc468a4dd57246fa9d0e868aba9085">compare
view</a></li>
</ul>
</details>
<br />


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</details>

Author: boveus

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Set up Ruby ${{ matrix.ruby }}
-      uses: ruby/setup-ruby@d697be2f83c6234b20877c3b5eac7a7f342f0d0c #v1.269.0 tag
+      uses: ruby/setup-ruby@ac793fdd38cc468a4dd57246fa9d0e868aba9085 #v1.269.0 tag
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true