flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/b2852eb9365c6de48ffb0dc2c9562591f652242a?narHash=sha256-C8e9S7RzshSdHB7L%2Bv9I51af1gDM5unhJ2xO1ywxNH8%3D' (2024-06-27)
  → 'github:NixOS/nixpkgs/1d9c2c9b3e71b9ee663d11c5d298727dace8d374?narHash=sha256-8MUgifkJ7lkZs3u99UDZMB4kbOxvMEXQZ31FO3SopZ0%3D' (2024-07-19)
• 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/f451c19376071a90d8c58ab1a953c6e9840527fd?narHash=sha256-6FPUl7HVtvRHCCBQne7Ylp4p%2BdpP3P/OYuzjztZ4s70%3D' (2024-07-15)
• 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)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/5be53be9e5c766fc72fc5d65ba8a566cc0c3217f?narHash=sha256-LBfULF%2B2sCaWmkjmj1LkkGrAS/E9ZdXU1A5wWKjt9p0%3D' (2024-06-29)
  → 'github:oxalica/rust-overlay/b7996075da11a2d441cfbf4e77c2939ce51506fd?narHash=sha256-gYGX9/22tPNeF7dR6bWN5rsrpU4d06GnQNNgZ6ZiXz0%3D' (2024-07-20)