chore(deps): bump cachix/install-nix-action from 22 to 25 (#5)

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 22 to 25.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](cachix/install-nix-action@v22...v25)

---
updated-dependencies:
- dependency-name: cachix/install-nix-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v22
+    - uses: cachix/install-nix-action@v25
       with:
         github_access_token: ${{ secrets.GITHUB_TOKEN }}
     - uses: cachix/cachix-action@v14