chore(deps): bump cachix/install-nix-action from 25 to 26 (#4676)

Bumps
[cachix/install-nix-action](https://github.com/cachix/install-nix-action)
from 25 to 26.
<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>v26</h2>
<p>Bump to Nix 2.20.5 to address CVE-2024-27297 /
GHSA-2ffj-w4mj-pg37.</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="8887e596b4"><code>8887e59</code></a>
Nix: 2.20.5</li>
<li><a
href="39a075cc21"><code>39a075c</code></a>
bump</li>
<li>See full diff in <a
href="https://github.com/cachix/install-nix-action/compare/v25...v26">compare
view</a></li>
</ul>
</details>
<br />


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.github/workflows/build.yml

@@ -48,7 +48,7 @@ jobs:
       - uses: crazy-max/ghaction-upx@v3
         with:
           install-only: true
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v4

.github/workflows/docs.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v3
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           nix_path: nixpkgs=channel:nixos-unstable
           github_access_token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/nightly-oss.yml

@@ -33,7 +33,7 @@ jobs:
       - uses: crazy-max/ghaction-upx@v3
         with:
           install-only: true
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: dockerhub-login

.github/workflows/release.yml

@@ -101,7 +101,7 @@ jobs:
       - uses: crazy-max/ghaction-upx@v3
         with:
           install-only: true
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: dockerhub-login