fix: bump release-please from 15.10.2 to 15.10.4 (#762)

Bumps [release-please](https://github.com/googleapis/release-please)
from 15.10.2 to 15.10.4.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/googleapis/release-please/releases">release-please's
releases</a>.</em></p>
<blockquote>
<h2>v15.10.4</h2>
<h2><a
href="https://github.com/googleapis/release-please/compare/v15.10.3...v15.10.4">15.10.4</a>
(2023-04-19)</h2>
<h3>Bug Fixes</h3>
<ul>
<li>Add more trace logging when searching for latest release version (<a
href="https://redirect.github.com/googleapis/release-please/issues/1922">#1922</a>)
(<a
href="https://github.com/googleapis/release-please/commit/c33cc8112fc366242182bcb3a28015c488f6140b">c33cc81</a>)</li>
</ul>
<h2>v15.10.3</h2>
<h2><a
href="https://github.com/googleapis/release-please/compare/v15.10.2...v15.10.3">15.10.3</a>
(2023-04-11)</h2>
<h3>Bug Fixes</h3>
<ul>
<li>NeedsBootstrap computation also considers tags (<a
href="https://redirect.github.com/googleapis/release-please/issues/1915">#1915</a>)
(<a
href="https://github.com/googleapis/release-please/commit/2773b6e8ae6bf7bd98adb89ed0eb702a1705b27b">2773b6e</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/googleapis/release-please/blob/main/CHANGELOG.md">release-please's
changelog</a>.</em></p>
<blockquote>
<h2><a
href="https://github.com/googleapis/release-please/compare/v15.10.3...v15.10.4">15.10.4</a>
(2023-04-19)</h2>
<h3>Bug Fixes</h3>
<ul>
<li>Add more trace logging when searching for latest release version (<a
href="https://redirect.github.com/googleapis/release-please/issues/1922">#1922</a>)
(<a
href="https://github.com/googleapis/release-please/commit/c33cc8112fc366242182bcb3a28015c488f6140b">c33cc81</a>)</li>
</ul>
<h2><a
href="https://github.com/googleapis/release-please/compare/v15.10.2...v15.10.3">15.10.3</a>
(2023-04-11)</h2>
<h3>Bug Fixes</h3>
<ul>
<li>NeedsBootstrap computation also considers tags (<a
href="https://redirect.github.com/googleapis/release-please/issues/1915">#1915</a>)
(<a
href="https://github.com/googleapis/release-please/commit/2773b6e8ae6bf7bd98adb89ed0eb702a1705b27b">2773b6e</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/googleapis/release-please/commit/2b56b2213c10c6a0d3265746b10b19fbfce47292"><code>2b56b22</code></a>
chore(main): release 15.10.4 (<a
href="https://redirect.github.com/googleapis/release-please/issues/1927">#1927</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/c33cc8112fc366242182bcb3a28015c488f6140b"><code>c33cc81</code></a>
fix: add more trace logging when searching for latest release version
(<a
href="https://redirect.github.com/googleapis/release-please/issues/1922">#1922</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/7a0b3e9a5e432d9a74a792a6a61efa2353284084"><code>7a0b3e9</code></a>
docs: Add permissions stanza to manifest-releaser github script (<a
href="https://redirect.github.com/googleapis/release-please/issues/1926">#1926</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/1d203c7884c3a48ee52bab65a3eb6861286be7f9"><code>1d203c7</code></a>
chore(main): release 15.10.3 (<a
href="https://redirect.github.com/googleapis/release-please/issues/1919">#1919</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/2773b6e8ae6bf7bd98adb89ed0eb702a1705b27b"><code>2773b6e</code></a>
fix: needsBootstrap computation also considers tags (<a
href="https://redirect.github.com/googleapis/release-please/issues/1915">#1915</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/b08e1554f64e54884137aae7326e3bd1bc4e7e9d"><code>b08e155</code></a>
docs: clarify that the commit override does not work on plain merges (<a
href="https://redirect.github.com/googleapis/release-please/issues/1917">#1917</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/57b2b38b4c190e9a8ff9c7e1b9b41170221d55d1"><code>57b2b38</code></a>
docs: add section about using squash-merge (<a
href="https://redirect.github.com/googleapis/release-please/issues/1916">#1916</a>)</li>
<li>See full diff in <a
href="https://github.com/googleapis/release-please/compare/v15.10.2...v15.10.4">compare
view</a></li>
</ul>
</details>
<br />


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package.json

@@ -26,7 +26,7 @@
   "homepage": "https://github.com/bcoe/release-please-action#readme",
   "dependencies": {
     "@actions/core": "^1.10.0",
-    "release-please": "^15.10.2"
+    "release-please": "^15.10.4"
   },
   "devDependencies": {
     "@vercel/ncc": "^0.27.0",