Restore and save Nix Store

Version updated for https://github.com/nix-community/cache-nix-action to version v6.1.3.

  • This action is used across all versions by 7 repositories.

Go to the GitHub Marketplace to find the latest changes.

Release notes

Fixes

  • Use bigint instead of number for the store size (#117)
  • Fix saving a cache (#122)