Bump pascalgn/automerge-action from 0.15.5 to 0.15.6

Bumps [pascalgn/automerge-action](https://github.com/pascalgn/automerge-action) from 0.15.5 to 0.15.6.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/pascalgn/automerge-action/releases">pascalgn/automerge-action's releases</a>.</em></p>
<blockquote>
<h2>Release 0.15.6</h2>
<ul>
<li>Add <code>MERGE_READY_STATE</code> option (<a href="https://github-redirect.dependabot.com/pascalgn/automerge-action/issues/208">#208</a>)</li>
<li>Update dependencies</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/pascalgn/automerge-action/commit/22948e0bc22f0aa673800da838595a3e7347e584"><code>22948e0</code></a> Release 0.15.6</li>
<li><a href="https://github.com/pascalgn/automerge-action/commit/a114cd994d5b1f7c6ce07a8ce04d9780798c1432"><code>a114cd9</code></a> Update dependencies</li>
<li><a href="https://github.com/pascalgn/automerge-action/commit/cad5ab531355d3a570f3d99e049e75f56eb695d9"><code>cad5ab5</code></a> Remove unused dependabot config</li>
<li><a href="https://github.com/pascalgn/automerge-action/commit/cecb27b0b360b14c35a1503dffb6eee321422373"><code>cecb27b</code></a> Change bool to string in readme (<a href="https://github-redirect.dependabot.com/pascalgn/automerge-action/issues/205">#205</a>)</li>
<li><a href="https://github.com/pascalgn/automerge-action/commit/e2ac821e5507a3956998b5bd4c1401f69bb70d1b"><code>e2ac821</code></a> Add dependabot configuration (<a href="https://github-redirect.dependabot.com/pascalgn/automerge-action/issues/201">#201</a>)</li>
<li><a href="https://github.com/pascalgn/automerge-action/commit/5407b38be5c0b7fbe11bd2ff8ba50d9a00ce65a1"><code>5407b38</code></a> Add support for MERGE_READY_STATE option (<a href="https://github-redirect.dependabot.com/pascalgn/automerge-action/issues/208">#208</a>)</li>
<li>See full diff in <a href="https://github.com/pascalgn/automerge-action/compare/v0.15.5...v0.15.6">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=pascalgn/automerge-action&package-manager=github_actions&previous-version=0.15.5&new-version=0.15.6)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
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- `@dependabot squash and merge` will squash and merge this PR after your CI passes on it
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- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
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- `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)


</details>

.github/workflows/automerge.yml

@@ -17,7 +17,7 @@ jobs:
       runs-on: ubuntu-latest
       if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
       steps:
-        - uses: pascalgn/automerge-action@v0.15.5
+        - uses: pascalgn/automerge-action@v0.15.6
           env:
             GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
             MERGE_LABELS: "dependencies"