Bump cachix/install-nix-action from 21 to 22

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 21 to 22.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](https://github.com/cachix/install-nix-action/compare/v21...v22)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -141,7 +141,7 @@ jobs:
       fail-fast: true
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v21
+    - uses: cachix/install-nix-action@v22
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - run: |