flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/10ecda252ce1b3b1d6403caeadbcc8f30d5ab796' (2022-09-30)
  → 'github:NixOS/nixpkgs/4428e23312933a196724da2df7ab78eb5e67a88e' (2022-10-14)
• Updated input 'pre-commit-hooks':
    'github:cachix/pre-commit-hooks.nix/2a4f1cfaa01b8b31edc7d3004454c4a0c38d50d8' (2022-09-30)
  → 'github:cachix/pre-commit-hooks.nix/94b0f300dd9a23d4e851aa2a947a1511d3410e2d' (2022-10-12)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/f48045bb46f6eef8314b9fe01b7db9dcdbca1e10' (2022-10-01)
  → 'github:oxalica/rust-overlay/f55e3d741c6fe357d1e1bea50f5916863c831fdc' (2022-10-15)