Bump DeterminateSystems/determinate-nix-action from 3.21.0 to 3.21.1 (#825)

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Bumps
[DeterminateSystems/determinate-nix-action](https://github.com/determinatesystems/determinate-nix-action)
from 3.21.0 to 3.21.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/determinatesystems/determinate-nix-action/releases">DeterminateSystems/determinate-nix-action's
releases</a>.</em></p>
<blockquote>
<h2>v3.21.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Apply pinning to GitHub Actions by <a
href="https://github.com/lucperkins"><code>@​lucperkins</code></a> in <a
href="https://redirect.github.com/DeterminateSystems/determinate-nix-action/pull/66">DeterminateSystems/determinate-nix-action#66</a></li>
<li>Release v3.21.1 by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>[bot]
in <a
href="https://redirect.github.com/DeterminateSystems/determinate-nix-action/pull/67">DeterminateSystems/determinate-nix-action#67</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/DeterminateSystems/determinate-nix-action/compare/v3.21.0...v3.21.1">https://github.com/DeterminateSystems/determinate-nix-action/compare/v3.21.0...v3.21.1</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/DeterminateSystems/determinate-nix-action/commit/9adf02b41cfdac2632e1c16f0480ff5bf3b05dd6"><code>9adf02b</code></a>
Release v3.21.1 (<a
href="https://redirect.github.com/determinatesystems/determinate-nix-action/issues/67">#67</a>)</li>
<li><a
href="https://github.com/DeterminateSystems/determinate-nix-action/commit/eee854fd4be13616e2aac974e86628abdab962f8"><code>eee854f</code></a>
Merge pull request <a
href="https://redirect.github.com/determinatesystems/determinate-nix-action/issues/66">#66</a>
from DeterminateSystems/actions-pinning</li>
<li><a
href="https://github.com/DeterminateSystems/determinate-nix-action/commit/12620061c689cb48541da2208d2625c5bc734e3b"><code>1262006</code></a>
Add zizmor checking workflow</li>
<li><a
href="https://github.com/DeterminateSystems/determinate-nix-action/commit/3be1005a7c38366c3cb5e8ec4fad6c8f42a3f8fd"><code>3be1005</code></a>
Merge remote-tracking branch 'origin/main' into actions-pinning</li>
<li><a
href="https://github.com/DeterminateSystems/determinate-nix-action/commit/4a4b48b0134befbc55a0be736759db27d058edd4"><code>4a4b48b</code></a>
Apply pinning to GitHub Actions</li>
<li>See full diff in <a
href="https://github.com/determinatesystems/determinate-nix-action/compare/v3.21.0...v3.21.1">compare
view</a></li>
</ul>
</details>
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.github/workflows/nix-flake.yml

@@ -21,7 +21,7 @@ jobs:
         uses: actions/checkout@v6.0.3
 
       - name: Install Nix
-        uses: DeterminateSystems/determinate-nix-action@v3.21.0
+        uses: DeterminateSystems/determinate-nix-action@v3.21.1
 
       - name: Check flake
         run: nix flake check --all-systems