Bumps [bufbuild/buf-setup-action](https://github.com/bufbuild/buf-setup-action) from 1.3.0 to 1.3.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/bufbuild/buf-setup-action/releases">bufbuild/buf-setup-action's releases</a>.</em></p>
<blockquote>
<h2>v1.3.1</h2>
<p>Set the default buf version to v1.3.1</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="
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| .. | ||
| ISSUE_TEMPLATE | ||
| PULL_REQUEST_TEMPLATE | ||
| workflows | ||
| CODEOWNERS | ||
| dependabot.yml | ||
| labeler.yml | ||
| PULL_REQUEST_TEMPLATE.md | ||