flake.lock: Update

Flake lock file updates:

• Updated input 'nightly':
    'github:nix-community/neovim-nightly-overlay/0d545972c93c044bed52c27cc4035054793d913a?narHash=sha256-uA/KX/TVlreFS/xZjjAPBoRzybQQWUX%2BUr5mOzsF7FE%3D' (2024-12-01)
  → 'github:nix-community/neovim-nightly-overlay/73ec92a4c2773ead4af1c657ea81142d4a27fe78?narHash=sha256-HOzahkMv67wtSYcudRpGqNXjFwFoc2lwq0%2BEv6h8T3k%3D' (2024-12-02)
• Updated input 'nightly/neovim-src':
    'github:neovim/neovim/ab9cfc4dc3422af5235759efef456d3e02745217?narHash=sha256-VKk53/3aTk91s1OmSfUt6RqFpxBjUy8ZYoYrechTUns%3D' (2024-11-30)
  → 'github:neovim/neovim/feb62d5429680278c1353c565db6bb3ecb3b7c24?narHash=sha256-oIbVYa5y0lgXDRaZUn0MdAKC2Vf9OakbtIFmbhL8K1k%3D' (2024-12-01)
• Updated input 'nightly/nixpkgs':
    'github:NixOS/nixpkgs/4703b8d2c708e13a8cab03d865f90973536dcdf5?narHash=sha256-B5pYT%2BIVaqcrfOekkwKvx/iToDnuQWzc2oyDxzzBDc4%3D' (2024-11-30)
  → 'github:NixOS/nixpkgs/2c27ab2e60502d1ebb7cf38909de38663f762a79?narHash=sha256-n/DOfpKH1vkukuBnach91QBQId2dr5tkE7/7UrkV2zw%3D' (2024-12-01)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/4703b8d2c708e13a8cab03d865f90973536dcdf5?narHash=sha256-B5pYT%2BIVaqcrfOekkwKvx/iToDnuQWzc2oyDxzzBDc4%3D' (2024-11-30)
  → 'github:nixos/nixpkgs/31d66ae40417bb13765b0ad75dd200400e98de84?narHash=sha256-7NbtSLfZO0q7MXPl5hzA0sbVJt6pWxxtGWbaVUDDmjs%3D' (2024-12-01)