flake.lock: Update

Flake lock file updates:

• Updated input 'flake-utils':
    'github:numtide/flake-utils/c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a?narHash=sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ%3D' (2024-09-17)
  → 'github:numtide/flake-utils/11707dc2f618dd54ca8739b309ec4fc024de578b?narHash=sha256-l0KFg5HjrsfsO/JpG%2Br7fRrqm12kzFHyUHqHCVpMMbI%3D' (2024-11-13)
• Updated input 'merlin5_2':
    'github:ocaml/merlin/0eaccc1b8520d605b1e00685e1c3f8acb5da534c?narHash=sha256-ijy7MvHaVOyj99I4M7jqqollbou3ilzcWUctJCuLES4%3D' (2024-09-27)
  → 'github:ocaml/merlin/005b42c50b450a4930d5cea25aab271ed5b88cc3?narHash=sha256-/QxsT%2B0rrspSYpdnydHmRxkjblJBhWAWjIK30UhQbSM%3D' (2024-12-20)
• Updated input 'nixpkgs':
    'github:nix-ocaml/nix-overlays/b5c11f8e03530ab94cd251871bd1a0abcf7bef54?narHash=sha256-bffkUWgbvlDEXPR0QUyHKPuI1FdMmIZvRwIWPP14SYQ%3D' (2024-09-29)
  → 'github:nix-ocaml/nix-overlays/dd7cc77e0c0c06d464ab9b59a395e8c55a65f475?narHash=sha256-YyrcrJuPR5aH9tp89olPQJOl3NJLqx1TDu8iufqBjRA%3D' (2025-01-04)
• Removed input 'nixpkgs/flake-utils'
• Removed input 'nixpkgs/flake-utils/systems'
• Updated input 'nixpkgs/nixpkgs':
    'github:NixOS/nixpkgs/602fb03c3a4aaeb33ea15ae1c921325c593531b1?narHash=sha256-IZJVvM%2B8Jwk8RgWygbfAZ7mnLk0DxGI/2HBDSNxCIio%3D' (2024-09-28)
  → 'github:NixOS/nixpkgs/44e31f9528469b1ca3e7216c6f59319bebcd834c?narHash=sha256-fcZB2X/oScLgqhFKz2E1UNC2yot9jRkaW0ms%2BG4cbCI%3D' (2025-01-04)

Author: github-actions[bot]