Bump mfinelli/setup-shfmt from 2 to 3 (#15)

Bumps [mfinelli/setup-shfmt](https://github.com/mfinelli/setup-shfmt)
from 2 to 3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/mfinelli/setup-shfmt/releases">mfinelli/setup-shfmt's
releases</a>.</em></p>
<blockquote>
<h2>Version 3.0.0</h2>
<p>Upgrade to node 20</p>
<h2>Version 2.0.1</h2>
<p>Upgrade dependencies</p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/mfinelli/setup-shfmt/blob/master/CHANGELOG.md">mfinelli/setup-shfmt's
changelog</a>.</em></p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/031e887e39d899d773a7e9b6dd6472c2c23ff50d"><code>031e887</code></a>
Update dist</li>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/bac34a121a883e4380c452154f6ddc2427afd450"><code>bac34a1</code></a>
Release v3.0.1</li>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/923e8e4d2a6d3eef2df62cbdb2720e3f6bb753db"><code>923e8e4</code></a>
Remove useless debug statements</li>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/72d256f5b3da4d6c64d98da538098a162758936b"><code>72d256f</code></a>
Update version</li>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/ae7c60b4fd9b2c45bd5ddab5a6900a3f289a1f58"><code>ae7c60b</code></a>
Update readme</li>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/cdd518a729a9907f93fa6124b40c4700d216c81d"><code>cdd518a</code></a>
Release v3</li>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/34c387332544352931e09643d899b4a35ae656cf"><code>34c3873</code></a>
Upgrade to node 20</li>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/38c6984d7ae0b8ac93bcda8002f81f4d70d87d52"><code>38c6984</code></a>
Relax setup node version</li>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/3b947bd9d40d1b968fd8ff56542973709d4d54bd"><code>3b947bd</code></a>
Update dist</li>
<li><a
href="https://github.com/mfinelli/setup-shfmt/commit/594b7c76cf7459aeb7d64abdccb5de0234f88505"><code>594b7c7</code></a>
Merge pull request <a
href="https://redirect.github.com/mfinelli/setup-shfmt/issues/293">#293</a>
from mfinelli/dependabot/npm_and_yarn/jest-and-types/...</li>
<li>Additional commits viewable in <a
href="https://github.com/mfinelli/setup-shfmt/compare/v2...v3">compare
view</a></li>
</ul>
</details>
<br />


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.github/workflows/ci.yml

@@ -66,6 +66,6 @@ jobs:
   shfmt:
     runs-on: ubuntu-latest
     steps:
-      - uses: mfinelli/setup-shfmt@v2
+      - uses: mfinelli/setup-shfmt@v3
       - uses: actions/checkout@v3
       - run: shfmt --diff .