fix: bump release-please from 15.9.1 to 15.9.2 (#746)

Bumps [release-please](https://github.com/googleapis/release-please)
from 15.9.1 to 15.9.2.
<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>v15.9.2</h2>
<h2><a
href="https://github.com/googleapis/release-please/compare/v15.9.1...v15.9.2">15.9.2</a>
(2023-03-28)</h2>
<h3>Bug Fixes</h3>
<ul>
<li><strong>cargo-workspace:</strong> Find workspace modules on the
target branch (<a
href="https://redirect.github.com/googleapis/release-please/issues/1889">#1889</a>)
(<a
href="https://github.com/googleapis/release-please/commit/96479413fd5fe9d1c546d829e70bfaf99b36661a">9647941</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/v15.9.1...v15.9.2">15.9.2</a>
(2023-03-28)</h2>
<h3>Bug Fixes</h3>
<ul>
<li><strong>cargo-workspace:</strong> Find workspace modules on the
target branch (<a
href="https://redirect.github.com/googleapis/release-please/issues/1889">#1889</a>)
(<a
href="https://github.com/googleapis/release-please/commit/96479413fd5fe9d1c546d829e70bfaf99b36661a">9647941</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/googleapis/release-please/commit/af30ea6a99d8ae02038043467e7c6c900a15b50d"><code>af30ea6</code></a>
chore(main): release 15.9.2 (<a
href="https://redirect.github.com/googleapis/release-please/issues/1890">#1890</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/96479413fd5fe9d1c546d829e70bfaf99b36661a"><code>9647941</code></a>
fix(cargo-workspace): find workspace modules on the target branch (<a
href="https://redirect.github.com/googleapis/release-please/issues/1889">#1889</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/faa52d37259a7e85f145caeb20c4408520326b65"><code>faa52d3</code></a>
chore(deps): update dependency sinon to v15.0.3 (<a
href="https://redirect.github.com/googleapis/release-please/issues/1888">#1888</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/439290c63c5790d9161396fdba1daca4b8781e44"><code>439290c</code></a>
chore: store nodejs build artifacts in placer (<a
href="https://redirect.github.com/googleapis/release-please/issues/1882">#1882</a>)</li>
<li>See full diff in <a
href="https://github.com/googleapis/release-please/compare/v15.9.1...v15.9.2">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": "^15.9.1"
+    "release-please": "^15.9.2"
   },
   "devDependencies": {
     "@vercel/ncc": "^0.27.0",