ci: bump cachix/install-nix-action from 22 to 23

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 22 to 23.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](cachix/install-nix-action@v22...v23)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/main.yml

@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v22
+      - uses: cachix/install-nix-action@v23
         with:
           nix_path: nixpkgs=channel:nixos-20.03
       - uses: Swatinem/rust-cache@v2