flake.lock: Update (#451)

Flake lock file updates:

• Updated input 'neovim-nightly':
    'github:nix-community/neovim-nightly-overlay/bcd445a62280469b07354f1263bc1f136e64506a?narHash=sha256-n7c2VcDQN2C6vUV8/AfaZpHYWgvlbFcHErqf//hPwC8%3D' (2024-12-31)
  → 'github:nix-community/neovim-nightly-overlay/47e417b35d1ec8bf79deec3e96c90f1e41a9e1e4?narHash=sha256-Axke90GBbocA48Lrb7ub/RycvHt1NcujkZW1RMF%2BQ7Q%3D' (2025-01-01)
• Updated input 'neovim-nightly/neovim-src':
    'github:neovim/neovim/e9c077d197a80a2ecd858821b18d0be3e3eb6d0b?narHash=sha256-T/UtvF0WSkXy4Lk0ZzCsqjp6At0SRmwTsRXDxJcFzMA%3D' (2024-12-30)
  → 'github:neovim/neovim/59cbe640233eeb6ae96231e059449e73e15f9ea5?narHash=sha256-gLa%2B1QOW7P5J4cAG34BW68tnf/yOx50rH6iZuSyoX1A%3D' (2024-12-31)
• Updated input 'neovim-nightly/nixpkgs':
    'github:NixOS/nixpkgs/6d97d419e5a9b36e6293887a89a078cf85f5a61b?narHash=sha256-opBsbR/nrGxiiF6XzlVluiHYb6yN/hEwv%2BlBWTy9xoM%3D' (2024-12-30)
  → 'github:NixOS/nixpkgs/0e82ab234249d8eee3e8c91437802b32c74bb3fd?narHash=sha256-zExSA1i/b%2B1NMRhGGLtNfFGXgLtgo%2BdcuzHzaWA6w3Q%3D' (2024-12-30)
• Updated input 'neovim-nightly/treefmt-nix':
    'github:numtide/treefmt-nix/9e09d30a644c57257715902efbb3adc56c79cf28?narHash=sha256-8T3K5amndEavxnludPyfj3Z1IkcFdRpR23q%2BT0BVeZE%3D' (2024-12-25)
  → 'github:numtide/treefmt-nix/56c0ecd79f7ba01a0ec027da015df751d6ca3ae7?narHash=sha256-Q6xAmciTXDtZfUxf6c15QqtRR8BvX4edYPstF/uoqMk%3D' (2024-12-31)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/6d97d419e5a9b36e6293887a89a078cf85f5a61b?narHash=sha256-opBsbR/nrGxiiF6XzlVluiHYb6yN/hEwv%2BlBWTy9xoM%3D' (2024-12-30)
  → 'github:nixos/nixpkgs/0e82ab234249d8eee3e8c91437802b32c74bb3fd?narHash=sha256-zExSA1i/b%2B1NMRhGGLtNfFGXgLtgo%2BdcuzHzaWA6w3Q%3D' (2024-12-30)

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