flake.lock: Update

Flake lock file updates:

• Updated input 'fourmolu-nix':
    'github:jedimahdi/fourmolu-nix/0bc8925542f3a5343bb23baf308b57e9fa87e09b' (2024-02-02)
  → 'github:jedimahdi/fourmolu-nix/717f5a91b0d7b97b1be7ecc3a0fd42d37ffe1c9b' (2024-02-07)
• Updated input 'haskell-flake':
    'github:srid/haskell-flake/56c5550e18c583bcdf0ebd267efa4e6286619d28' (2024-02-06)
  → 'github:srid/haskell-flake/593346d1c1388f726823dc9b1cd271df8a7218aa' (2024-02-24)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/4b1aab22192b787355733c9495d47f4c66af084c' (2024-02-05)
  → 'github:nixos/nixpkgs/9a9dae8f6319600fa9aebde37f340975cab4b8c0' (2024-02-24)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/c6153c2a3ff4c38d231e3ae99af29b87f1df5901' (2024-01-28)
  → 'github:numtide/treefmt-nix/e497a9ddecff769c2a7cbab51e1ed7a8501e7a3a' (2024-02-25)