flake.lock: Update

Flake lock file updates:

• Updated input 'nix-gaming':
    'github:fufexan/nix-gaming/e5559b3a91433c21eb64792b78134582b3bd77f2?narHash=sha256-Z9hc25iV%2BjhH0AlvsrG65KqLEd726/HVvalSiqNQLqA%3D' (2025-01-20)
  → 'github:fufexan/nix-gaming/36dd40f5738c082f7d6e6c27ef46927c51c2408d?narHash=sha256-QB2krnafcyUtqfCpD0P%2BZBRD2ZNgb0io3iGBhq%2BXvZM%3D' (2025-01-25)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/5df43628fdf08d642be8ba5b3625a6c70731c19c?narHash=sha256-Tbk1MZbtV2s5aG%2BiM99U8FqwxU/YNArMcWAv6clcsBc%3D' (2025-01-16)
  → 'github:NixOS/nixpkgs/0aa475546ed21629c4f5bbf90e38c846a99ec9e9?narHash=sha256-38J9QfeGSej341ouwzqf77WIHAScihAKCt8PQJ%2BNH28%3D' (2025-01-23)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/d1ed3b385f8130e392870cfb1dbfaff8a63a1899?narHash=sha256-uPNWcYbhY2fjY3HOfRCR5jsfzdzemhfxLSxwjXYXqNc%3D' (2025-01-17)
  → 'github:numtide/treefmt-nix/f2cc121df15418d028a59c9737d38e3a90fbaf8f?narHash=sha256-5An1wq5U8sNycOBBg3nsDDgpwBmR9liOpDGlhliA6Xo%3D' (2025-01-21)
• Updated input 'umu':
    'git+https://github.com/LovingMelody/umu-launcher/?dir=packaging/nix&ref=refs/heads/update-nix&rev=62343d9d3029c0288c98167fbd7a7869cce7b6b5&submodules=1' (2025-01-21)
  → 'git+https://github.com/LovingMelody/umu-launcher/?dir=packaging/nix&ref=refs/heads/update-nix&rev=057c8ad5447fdcc4304603386bea3082076c013a&submodules=1' (2025-01-25)
• Updated input 'umu/nixpkgs':
    'github:LovingMelody/nixpkgs/f091d48175fad21ce71faacfd3aecb57d8814990?narHash=sha256-9BOjprNDwt95olCWD/uH602V2g0YrZP2gOI62JXi0Uo%3D' (2025-01-21)
  → 'github:LovingMelody/nixpkgs/5176ff70a4366bd7c50a6be82fec6107f3430ea8?narHash=sha256-qvoqpH/uZFnjodCwkXrWH0e47iDMTHdVWsA79hhr/LA%3D' (2025-01-25)