build(deps): bump actions/setup-node from 6.3.0 to 6.4.0 (#921)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from
6.3.0 to 6.4.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/actions/setup-node/releases">actions/setup-node's
releases</a>.</em></p>
<blockquote>
<h2>v6.4.0</h2>
<h2>What's Changed</h2>
<h3>Dependency updates:</h3>
<ul>
<li>Upgrade <a
href="https://github.com/actions"><code>@​actions</code></a>
dependencies by <a
href="https://github.com/Copilot"><code>@​Copilot</code></a> in <a
href="https://redirect.github.com/actions/setup-node/pull/1525">actions/setup-node#1525</a></li>
<li>Update Node.js versions in versions.yml and bump package to v6.4.0
by <a
href="https://github.com/priya-kinthali"><code>@​priya-kinthali</code></a>
in <a
href="https://redirect.github.com/actions/setup-node/pull/1533">actions/setup-node#1533</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/Copilot"><code>@​Copilot</code></a> made
their first contribution in <a
href="https://redirect.github.com/actions/setup-node/pull/1525">actions/setup-node#1525</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/setup-node/compare/v6...v6.4.0">https://github.com/actions/setup-node/compare/v6...v6.4.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="48b55a011b"><code>48b55a0</code></a>
Update Node.js versions in versions.yml and bump package to v6.4.0 (<a
href="https://redirect.github.com/actions/setup-node/issues/1533">#1533</a>)</li>
<li><a
href="ab72c7e7eb"><code>ab72c7e</code></a>
Upgrade <a href="https://github.com/actions"><code>@​actions</code></a>
dependencies (<a
href="https://redirect.github.com/actions/setup-node/issues/1525">#1525</a>)</li>
<li>See full diff in <a
href="53b83947a5...48b55a011b">compare
view</a></li>
</ul>
</details>
<br />

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/nightly.yml

@@ -29,7 +29,7 @@ jobs:
       with:
         go-version: "^1.26"
     - name: Set up Node.js
-      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
+      uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
       with:
         node-version: "22"
     - name: Run server conformance tests