Bump DeterminateSystems/nix-installer-action from 15 to 16 (#3401)

Bumps
[DeterminateSystems/nix-installer-action](https://github.com/determinatesystems/nix-installer-action)
from 15 to 16.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/determinatesystems/nix-installer-action/releases">DeterminateSystems/nix-installer-action's
releases</a>.</em></p>
<blockquote>
<h2>v16</h2>
<h2>What's Changed</h2>
<ul>
<li>Update <code>detsys-ts</code>: Merge pull request <a
href="https://redirect.github.com/determinatesystems/nix-installer-action/issues/67">#67</a>
from DeterminateSystems/allow-obliterating-id-token-privs by <a
href="https://github.com/detsys-pr-bot"><code>@​detsys-pr-bot</code></a>
in <a
href="https://redirect.github.com/DeterminateSystems/nix-installer-action/pull/128">DeterminateSystems/nix-installer-action#128</a></li>
<li>Log in to flakehub on existing installs by <a
href="https://github.com/grahamc"><code>@​grahamc</code></a> in <a
href="https://redirect.github.com/DeterminateSystems/nix-installer-action/pull/129">DeterminateSystems/nix-installer-action#129</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/DeterminateSystems/nix-installer-action/compare/v15...v16">https://github.com/DeterminateSystems/nix-installer-action/compare/v15...v16</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/DeterminateSystems/nix-installer-action/commit/e50d5f73bfe71c2dd0aa4218de8f4afa59f8f81d"><code>e50d5f7</code></a>
Log in to flakehub on existing installs (<a
href="https://redirect.github.com/determinatesystems/nix-installer-action/issues/129">#129</a>)</li>
<li><a
href="https://github.com/DeterminateSystems/nix-installer-action/commit/25431d2798126d4ae24195d3f4869dc8d447dfc2"><code>25431d2</code></a>
Update <code>detsys-ts</code> for: `Merge pull request <a
href="https://redirect.github.com/determinatesystems/nix-installer-action/issues/67">#67</a>
from DeterminateSystems/allow...</li>
<li>See full diff in <a
href="https://github.com/determinatesystems/nix-installer-action/compare/v15...v16">compare
view</a></li>
</ul>
</details>
<br />


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.github/workflows/dev_envs.yml

@@ -18,7 +18,7 @@ jobs:
         fetch-depth: 0
 
     - name: Install Nix
-      uses: DeterminateSystems/nix-installer-action@v15
+      uses: DeterminateSystems/nix-installer-action@v16
     - name: Run the Magic Nix Cache
       uses: DeterminateSystems/magic-nix-cache-action@v8