flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/8eb28adfa3dc4de28e792e3bf49fcf9007ca8ac9?narHash=sha256-NOrUtIhTkIIumj1E/Rsv1J37Yi3xGStISEo8tZm3KW4%3D' (2025-09-05)
  → 'github:nixos/nixpkgs/0b4defa2584313f3b781240b29d61f6f9f7e0df3?narHash=sha256-Oncbh0UmHjSlxO7ErQDM3KM0A5/Znfofj2BSzlHLeVw%3D' (2025-10-09)
• Updated input 'pre-commit-hooks':
    'github:cachix/pre-commit-hooks.nix/ab82ab08d6bf74085bd328de2a8722c12d97bd9d?narHash=sha256-E9spYi9lxm2f1zWQLQ7xQt8Xs2nWgr1T4QM7ZjLFphM%3D' (2025-09-07)
  → 'github:cachix/pre-commit-hooks.nix/cfc9f7bb163ad8542029d303e599c0f7eee09835?narHash=sha256-PTod9NG%2Bi3XbbnBKMl/e5uHDBYpwIWivQ3gOWSEuIEM%3D' (2025-10-03)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/cfd63776bde44438ff2936f0c9194c79dd407a5f?narHash=sha256-yuFSw6fpfjPtVMmym51ozHYpJQ7SzVOTkk7tUv2JA0U%3D' (2025-09-08)
  → 'github:oxalica/rust-overlay/a8143c74e5ed8cdbca3c96d4362b6392577481ff?narHash=sha256-FVVS5YgOFQHa8waL9EoUuw29iaDIF0qRkVlXIaU1j%2Bc%3D' (2025-10-11)

Author: github-actions[bot]