build(deps): update flake.lock

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/9227223f6d922fee3c7b190b2cc238a99527bbb7?narHash=sha256-pQMhCCHyQGRzdfAkdJ4cIWiw%2BJNuWsTX7f0ZYSyz0VY%3D' (2024-07-03)
  → 'github:hercules-ci/flake-parts/8471fe90ad337a8074e957b69ca4d0089218391d?narHash=sha256-XOQkdLafnb/p9ij77byFQjDf5m5QYl9b2REiVClC%2Bx4%3D' (2024-08-01)
• Updated input 'flake-parts/nixpkgs-lib':
    'https://github.com/NixOS/nixpkgs/archive/5daf0514482af3f97abaefc78a6606365c9108e2.tar.gz?narHash=sha256-Fm2rDDs86sHy0/1jxTOKB1118Q0O3Uc7EC0iXvXKpbI%3D' (2024-07-01)
  → 'https://github.com/NixOS/nixpkgs/archive/a5d394176e64ab29c852d03346c1fc9b0b7d33eb.tar.gz?narHash=sha256-uFf2QeW7eAHlYXuDktm9c25OxOyCoUOQmh5SZ9amE5Q%3D' (2024-08-01)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/68c9ed8bbed9dfce253cc91560bf9043297ef2fe?narHash=sha256-Tybxt65eyOARf285hMHIJ2uul8SULjFZbT9ZaEeUnP8%3D' (2024-07-21)
  → 'github:NixOS/nixpkgs/8a3354191c0d7144db9756a74755672387b702ba?narHash=sha256-Grh5PF0%2BgootJfOJFenTTxDTYPidA3V28dqJ/WV7iis%3D' (2024-08-18)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/a6afdaab4a47d6ecf647a74968e92a51c4a18e5a?narHash=sha256-33UCMmgPL%2Bsz06%2BiupNkl99hcBABP56ENcxSoKqr0TY%3D' (2024-07-24)
  → 'github:oxalica/rust-overlay/45e98fbd62c32e5927e952d2833fa1ba4fb35a61?narHash=sha256-L8dKaX4T3k%2BTR2fEHCfGbH4UXdspovz/pj87iai9qmc%3D' (2024-08-21)