chore(deps): bump cachix/cachix-action from 12 to 13 (#579)

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

.github/workflows/deploy.yml

@@ -40,7 +40,7 @@ jobs:
           extra_nix_config: |
             experimental-features = nix-command flakes
       - name: Setup Cachix
-        uses: cachix/cachix-action@v12
+        uses: cachix/cachix-action@v13
         with:
           name: tweag-nickel
           authToken: '${{ secrets.CACHIX_TWEAG_NICKEL_AUTH_TOKEN }}'