Bump cachix/install-nix-action from 21 to 22 (#73)

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](cachix/install-nix-action@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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/test.yml

@@ -48,7 +48,7 @@ jobs:
       - name: Rust Cache
         uses: Swatinem/rust-cache@v2
       - name: Setup Nix
-        uses: cachix/install-nix-action@v21
+        uses: cachix/install-nix-action@v22
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Setup Cachix