:arrow_up: Update nix flake

[Sigmanificient]

• Send report message to the standard error instead of standard output (fix a visibility issue in some special cases)

• Update flake.lock file

  • newer commit of the ruleset
  • use newly introduced banana-vera package from nixos-unstable
  • smaller flake

• Built on platform(s)

  • [x] x86_64-linux
  • [ ] aarch64-linux (do not have the hardware to test)
  • [ ] x86_64-darwin (do not have the hardware to test)
  • [x] aarch64-darwin