⬆️ Bump cachix/cachix-action from 13 to 14 (#5033)

Bumps [cachix/cachix-action](https://github.com/cachix/cachix-action) from 13 to 14.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/cachix/cachix-action/releases">cachix/cachix-action's releases</a>.</em></p>
<blockquote>
<h2>cachix-action-v14</h2>
<p><a href="https://blog.cachix.org/posts/2024-01-12-cachix-v1-7/">https://blog.cachix.org/posts/2024-01-12-cachix-v1-7/</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="18cf96c7c9"><code>18cf96c</code></a> Merge pull request <a href="https://redirect.github.com/cachix/cachix-action/issues/166">#166</a> from cachix/feature/daemon</li>
<li><a href="467b7ad67e"><code>467b7ad</code></a> daemon: fix support check in post run</li>
<li><a href="c9fc59c798"><code>c9fc59c</code></a> Merge pull request <a href="https://redirect.github.com/cachix/cachix-action/issues/161">#161</a> from cachix/feature/daemon</li>
<li><a href="e54c44ceb8"><code>e54c44c</code></a> daemon: drop latest daemon installer</li>
<li><a href="3a94faeceb"><code>3a94fae</code></a> daemon: update tests</li>
<li><a href="a7c8acb335"><code>a7c8acb</code></a> daemon: add even more logging to trusted user logic</li>
<li><a href="11a95a781d"><code>11a95a7</code></a> daemon: resolve promise</li>
<li><a href="608ce1e442"><code>608ce1e</code></a> daemon: add debugging logs to trusted user logic</li>
<li><a href="711a732439"><code>711a732</code></a> daemon: fix reading trusted-users</li>
<li><a href="8426524a2b"><code>8426524</code></a> daemon: check for credentials early</li>
<li>Additional commits viewable in <a href="https://github.com/cachix/cachix-action/compare/v13...v14">compare view</a></li>
</ul>
</details>
<br />


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</details>

.github/workflows/ci.yml

@@ -493,7 +493,7 @@ jobs:
       # I could not find a way to install tree-grepper without nix
       # https://github.com/BrianHicks/tree-grepper/issues/293
       - uses: cachix/install-nix-action@v25
-      - uses: cachix/cachix-action@v13
+      - uses: cachix/cachix-action@v14
         with:
             name: tree-grepper
       - run: nix-env -if https://github.com/BrianHicks/tree-grepper/archive/refs/heads/main.tar.gz