flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/9f4128e00b0ae8ec65918efeba59db998750ead6?narHash=sha256-rwz8NJZV%2B387rnWpTYcXaRNvzUSnnF9aHONoJIYmiUQ%3D' (2024-07-03)
  → 'github:NixOS/nixpkgs/c374d94f1536013ca8e92341b540eba4c22f9c62?narHash=sha256-Z/ELQhrSd7bMzTO8r7NZgi9g5emh%2BaRKoCdaAv5fiO0%3D' (2024-08-21)
• Updated input 'pre-commit-hooks':
    'github:cachix/pre-commit-hooks.nix/0ff4381bbb8f7a52ca4a851660fc7a437a4c6e07?narHash=sha256-F1h%2BXIsGKT9TkGO3omxDLEb/9jOOsI6NnzsXFsZhry4%3D' (2024-06-24)
  → 'github:cachix/pre-commit-hooks.nix/c8a54057aae480c56e28ef3e14e4960628ac495b?narHash=sha256-9etXEOUtzeMgqg1u0wp%2BEdwG7RpmrAZ2yX516bMj2aE%3D' (2024-08-23)
• Updated input 'pre-commit-hooks/nixpkgs-stable':
    'github:NixOS/nixpkgs/03d771e513ce90147b65fe922d87d3a0356fc125?narHash=sha256-0Y8IrGhRmBmT7HHXlxxepg2t8j1X90%2B%2BqRN3lukGaIk%3D' (2024-06-19)
  → 'github:NixOS/nixpkgs/194846768975b7ad2c4988bdb82572c00222c0d7?narHash=sha256-NGKVY4PjzwAa4upkGtAMz1npHGoRzWotlSnVlqI40mo%3D' (2024-07-07)