fix: bump release-please from 15.1.0 to 15.1.1 (#692)

Bumps [release-please](https://github.com/googleapis/release-please)
from 15.1.0 to 15.1.1.
<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>v15.1.1</h2>
<h2><a
href="https://github.com/googleapis/release-please/compare/v15.1.0...v15.1.1">15.1.1</a>
(2023-01-06)</h2>
<h3>Bug Fixes</h3>
<ul>
<li><strong>deps:</strong> Update
<code>@​google-automations/git-file-utils</code> to 1.2.5 (<a
href="https://github.com/googleapis/release-please/commit/89f363e015bb3a5a7e738232352db70e4d336d86">89f363e</a>)</li>
<li><strong>deps:</strong> Update code-suggester to 4.2.0 (<a
href="https://github-redirect.dependabot.com/googleapis/release-please/issues/1799">#1799</a>)
(<a
href="https://github.com/googleapis/release-please/commit/89f363e015bb3a5a7e738232352db70e4d336d86">89f363e</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/v15.1.0...v15.1.1">15.1.1</a>
(2023-01-06)</h2>
<h3>Bug Fixes</h3>
<ul>
<li><strong>deps:</strong> Update
<code>@​google-automations/git-file-utils</code> to 1.2.5 (<a
href="https://github.com/googleapis/release-please/commit/89f363e015bb3a5a7e738232352db70e4d336d86">89f363e</a>)</li>
<li><strong>deps:</strong> Update code-suggester to 4.2.0 (<a
href="https://github-redirect.dependabot.com/googleapis/release-please/issues/1799">#1799</a>)
(<a
href="https://github.com/googleapis/release-please/commit/89f363e015bb3a5a7e738232352db70e4d336d86">89f363e</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/googleapis/release-please/commit/24e0338449abde849999cbf6c2b9ffb857cdcd8a"><code>24e0338</code></a>
chore(main): release 15.1.1 (<a
href="https://github-redirect.dependabot.com/googleapis/release-please/issues/1800">#1800</a>)</li>
<li><a
href="https://github.com/googleapis/release-please/commit/89f363e015bb3a5a7e738232352db70e4d336d86"><code>89f363e</code></a>
fix(deps): update code-suggester to 4.2.0 (<a
href="https://github-redirect.dependabot.com/googleapis/release-please/issues/1799">#1799</a>)</li>
<li>See full diff in <a
href="https://github.com/googleapis/release-please/compare/v15.1.0...v15.1.1">compare
view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=release-please&package-manager=npm_and_yarn&previous-version=15.1.0&new-version=15.1.1)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

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