flake.lock: Update

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/80daad0' (2026-01-11)
  → 'github:hercules-ci/flake-parts/5792860' (2026-02-02)
• Updated input 'flake-parts/nixpkgs-lib':
    'github:nix-community/nixpkgs.lib/2075416' (2025-12-14)
  → 'github:nix-community/nixpkgs.lib/7271616' (2026-02-01)
• Updated input 'git-hooks':
    'github:cachix/git-hooks.nix/a1ef738' (2026-01-22)
  → 'github:cachix/git-hooks.nix/a8ca480' (2026-02-01)
• Updated input 'neovim-nightly-overlay':
    'github:nix-community/neovim-nightly-overlay/ff53ef2' (2026-02-01)
  → 'github:nix-community/neovim-nightly-overlay/0bb5259' (2026-02-08)
• Updated input 'neovim-nightly-overlay/flake-parts':
    'github:hercules-ci/flake-parts/80daad0' (2026-01-11)
  → 'github:hercules-ci/flake-parts/5792860' (2026-02-02)
• Updated input 'neovim-nightly-overlay/neovim-src':
    'github:neovim/neovim/270c7b4' (2026-01-31)
  → 'github:neovim/neovim/ed8fbd2' (2026-02-07)
• Updated input 'neovim-nightly-overlay/nixpkgs':
    'github:NixOS/nixpkgs/6308c3b' (2026-01-30)
  → 'github:NixOS/nixpkgs/ae67888' (2026-02-06)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/6308c3b' (2026-01-30)
  → 'github:nixos/nixpkgs/ae67888' (2026-02-06)

Author: github-actions[bot]