chore(deps): Bump cachix/install-nix-action from 30 to 31 (#4941)

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 30 to 31.
<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>v31</h2>
<h2>What's Changed</h2>
<ul>
<li>nix: 2.24.9 -&gt; 2.25.2 by <a href="https://github.com/Mic92"><code>@​Mic92</code></a> in <a href="https://redirect.github.com/cachix/install-nix-action/pull/218">cachix/install-nix-action#218</a></li>
<li>ci: fix latest installer tests by <a href="https://github.com/sandydoo"><code>@​sandydoo</code></a> in <a href="https://redirect.github.com/cachix/install-nix-action/pull/220">cachix/install-nix-action#220</a></li>
<li>ci: add ubuntu-24.04-arm to matrix by <a href="https://github.com/msgilligan"><code>@​msgilligan</code></a> in <a href="https://redirect.github.com/cachix/install-nix-action/pull/221">cachix/install-nix-action#221</a></li>
<li>nix: 2.25.2 -&gt; 2.26.2 by <a href="https://github.com/Mic92"><code>@​Mic92</code></a> in <a href="https://redirect.github.com/cachix/install-nix-action/pull/226">cachix/install-nix-action#226</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/msgilligan"><code>@​msgilligan</code></a> made their first contribution in <a href="https://redirect.github.com/cachix/install-nix-action/pull/221">cachix/install-nix-action#221</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/cachix/install-nix-action/compare/v30...v31">https://github.com/cachix/install-nix-action/compare/v30...v31</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/cachix/install-nix-action/commit/91a071959513ca103b54280ac0bef5b825791d4d"><code>91a0719</code></a> Merge pull request <a href="https://redirect.github.com/cachix/install-nix-action/issues/226">#226</a> from Mic92/nix-update</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/d81eadf041318952daecfb82fe8d7b4538067642"><code>d81eadf</code></a> nix: 2.25.2 -&gt; 2.26.2</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/3d69a1d4d262a7fb63731d2bc0d081544705e3d5"><code>3d69a1d</code></a> Merge pull request <a href="https://redirect.github.com/cachix/install-nix-action/issues/221">#221</a> from msgilligan/msgilligan/github-test-aarch64-linux</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/265a04a520d4a95357365b3a9c2e73135a8e9830"><code>265a04a</code></a> GitHub test.yml: add ubuntu-24.04-arm to matrix</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/89fd1e98db16430dad3d6595e0f6d30718059e4e"><code>89fd1e9</code></a> Merge pull request <a href="https://redirect.github.com/cachix/install-nix-action/issues/220">#220</a> from cachix/fix-master-tests</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/a76df16350261308addb51d2386f28f5f0975987"><code>a76df16</code></a> ci: bump nixpkgs channel</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/a49b703498f43e1426a1b820f27cf12cad57143f"><code>a49b703</code></a> ci: fix act test</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/f3f544c44bee9e88b5ab7976e42c675083a4f60b"><code>f3f544c</code></a> ci: fix latest installer tests</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/14344b39ca74ae462b171571696461d555318cc3"><code>14344b3</code></a> Merge pull request <a href="https://redirect.github.com/cachix/install-nix-action/issues/218">#218</a> from Mic92/nix-upgrade</li>
<li><a href="https://github.com/cachix/install-nix-action/commit/b1deb06f62baf2f4c1604bc301787f127e990349"><code>b1deb06</code></a> nix: 2.24.9 -&gt; 2.25.2</li>
<li>See full diff in <a href="https://github.com/cachix/install-nix-action/compare/v30...v31">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=30&new-version=31)](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>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -48,7 +48,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v30
+    - uses: cachix/install-nix-action@v31
     - uses: cachix/cachix-action@v16
       if: startsWith(github.ref, 'refs/heads/')
       with:
@@ -74,7 +74,7 @@ jobs:
     needs: [ changelog, build ]
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v30
+    - uses: cachix/install-nix-action@v31
     - uses: cachix/cachix-action@v16
       with:
         name: ic-hs-test

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
         fetch-depth: 0
         # fetch PR commit, not predicted merge commit
         ref: ${{ github.event.pull_request.head.sha }}
-    - uses: cachix/install-nix-action@v30
+    - uses: cachix/install-nix-action@v31
 
     # We are using the ic-hs-test cachix cache that is also used by
     # dfinity/ic-hs. This is partly laziness (on need to set up a separate
@@ -106,7 +106,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v30
+    - uses: cachix/install-nix-action@v31
     - uses: cachix/cachix-action@v16
       with:
         name: ic-hs-test
@@ -129,7 +129,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v30
+    - uses: cachix/install-nix-action@v31
     - uses: cachix/cachix-action@v16
       with:
         name: ic-hs-test

.github/workflows/update-hash.yml

@@ -16,7 +16,7 @@ jobs:
       with:
         # This is needed to be able to push and trigger CI with that push
         token: ${{ secrets.NIV_UPDATER_TOKEN }}
-    - uses: cachix/install-nix-action@v30
+    - uses: cachix/install-nix-action@v31
       with:
         nix_path: nixpkgs=channel:nixos-22.11
     - uses: cachix/cachix-action@v16