chore(deps): bump cachix/cachix-action from 12 to 13

Bumps [cachix/cachix-action](https://github.com/cachix/cachix-action) from 12 to 13.
- [Release notes](https://github.com/cachix/cachix-action/releases)
- [Commits](cachix/cachix-action@v12...v13)

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

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

.github/workflows/build.yml

@@ -14,7 +14,7 @@ jobs:
         nix_path: nixpkgs=channel:nixos-unstable
         extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
     - name: Cache on Cachix
-      uses: cachix/cachix-action@v12
+      uses: cachix/cachix-action@v13
       with:
         name: flake-programs-sqlite
         authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'