build(deps): bump cachix/install-nix-action from 23 to 25 (#197)

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 23 to 25.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/cachix/install-nix-action/releases">cachix/install-nix-action's releases</a>.</em></p>
<blockquote>
<h2>install-nix-action-v25</h2>
<p>Nix 2.19.2</p>
<h2>install-nix-action-v24</h2>
<ul>
<li>Nix 2.19.1</li>
<li>enables KVM on linux</li>
<li>set <code>TMPDIR</code> to avoid potential disk space issues</li>
<li>don't use the default GitHub token for Enterprise</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/cachix/install-nix-action/commit/6004951b182f8860210c8d6f0d808ec5b1a33d28"><code>6004951</code></a> Nix: 2.19.1 -&gt; 2.19.2</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/7ac1ec25491415c381d9b62f0657c7a028df52a7"><code>7ac1ec2</code></a> Nix 2.19.1</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/dc33a216cbd044f83110bee873ffbcfaa075a6e6"><code>dc33a21</code></a> Merge pull request <a href="https://redirect.github.com/cachix/install-nix-action/issues/200">#200</a> from cachix/fix/196</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/2b90cd313075d73080ff29dcb061b44f1cefe928"><code>2b90cd3</code></a> Merge pull request <a href="https://redirect.github.com/cachix/install-nix-action/issues/202">#202</a> from cachix/feature/kvm</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/fe19c91c6b0293441aca084e88a60ee59640922c"><code>fe19c91</code></a> feat: enable KVM on Linux if available</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/a56e3a80896f10bfe28feea2c49695c0225b2485"><code>a56e3a8</code></a> Merge pull request <a href="https://redirect.github.com/cachix/install-nix-action/issues/199">#199</a> from jalaziz/tempdir</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/81eb746179c512cd2af2b52874a906e8bff47eb0"><code>81eb746</code></a> Update install-nix.sh</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/97a1be3c09645647090b7f312d24568f1b5ef1ef"><code>97a1be3</code></a> fix: don't use the default GitHub token for Enterprise</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/2cce1fd76b6d5513f60cb776b3ea7d9874d849ba"><code>2cce1fd</code></a> fix: Set TMPDIR to avoid disk space issues</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/300721fe01bc8c4cf4677859b80e55154023c7d3"><code>300721f</code></a> Merge pull request <a href="https://redirect.github.com/cachix/install-nix-action/issues/193">#193</a> from cachix/dependabot/github_actions/actions/checkout-4</li>
<li>Additional commits viewable in <a href="https://github.com/cachix/install-nix-action/compare/v23...v25">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=cachix/install-nix-action&package-manager=github_actions&previous-version=23&new-version=25)](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
- `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge and block automerging
- `@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
- `@dependabot show <dependency name> ignore conditions` will show all of the ignore conditions of the specified dependency
- `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
- `@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/ci.yaml

@@ -35,7 +35,7 @@ jobs:
           echo ::set-output name=short::$(git rev-parse --short HEAD)
 
       - name: Install nix
-        uses: cachix/install-nix-action@v23
+        uses: cachix/install-nix-action@v25
         with:
           nix_path: nixpkgs=channel:nixos-unstable