flake.lock: Update (#193)

Flake lock file updates:

• Updated input 'claude-code':
    'github:sadjow/claude-code-nix/1ba489d' (2026-05-14)
  → 'github:sadjow/claude-code-nix/faa8786' (2026-05-15)
• Updated input 'claude-code/nixpkgs':
    'github:NixOS/nixpkgs/eef00df' (2026-05-13)
  → 'github:NixOS/nixpkgs/8a1b012' (2026-05-14)
• Updated input 'niri':
    'github:sodiboo/niri-flake/f525d3b' (2026-05-12)
  → 'github:sodiboo/niri-flake/9ab3f8b' (2026-05-15)
• Updated input 'niri/niri-unstable':
    'github:YaLTeR/niri/3819182' (2026-05-10)
  → 'github:YaLTeR/niri/cd5ac3e' (2026-05-15)
• Updated input 'niri/nixpkgs-stable':
    'github:NixOS/nixpkgs/8fd9daa' (2026-05-10)
  → 'github:NixOS/nixpkgs/d7a713c' (2026-05-14)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/8fd9daa' (2026-05-10)
  → 'github:nixos/nixpkgs/d7a713c' (2026-05-14)
• Updated input 'nixpkgs-unstable':
    'github:nixos/nixpkgs/eef00df' (2026-05-13)
  → 'github:nixos/nixpkgs/8a1b012' (2026-05-14)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: bottd