Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from V27 to 31.3.0. This release includes the previously tagged commit. - [Release notes](https://github.com/cachix/install-nix-action/releases) - [Changelog](https://github.com/cachix/install-nix-action/blob/master/RELEASE.md) - [Commits](https://github.com/cachix/install-nix-action/compare/V27...31.3.0) --- updated-dependencies: - dependency-name: cachix/install-nix-action dependency-version: 31.3.0 dependency-type: direct:production ... Signed-off-by: dependabot[bot] <support@github.com>