flake.lock: Update

Flake lock file updates:

• Updated input 'fenix':
    'https://api.flakehub.com/f/pinned/nix-community/fenix/0.1.1618%2Brev-9ccae1754eec0341b640d5705302ac0923d22875/018aea4c-03c9-7734-95d5-b84cc8881e3d/source.tar.gz?narHash=sha256-0dZpggYjjmWEk%2BrGixiBHOHuQfLzEzNfrtjSig04s6Q%3D'
  → 'https://api.flakehub.com/f/pinned/nix-community/fenix/0.1.1762%2Brev-668102037129923cd0fc239d864fce71eabdc6a3/018d63bb-6455-7a2f-98c6-74a36b8216a4/source.tar.gz?narHash=sha256-4o6TMpzBHO659EiJTzd/EGQGUDdbgwKwhqf3u6b23U8%3D' (2024-02-01)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/0840038f02daec6ba3238f05d8caa037d28701a0' (2023-09-30)
  → 'github:rust-lang/rust-analyzer/42cb1a2bd79af321b0cc503d2960b73f34e2f92b' (2024-01-31)
• Updated input 'flake-compat':
    'https://api.flakehub.com/f/pinned/edolstra/flake-compat/1.0.1/018afb31-abd1-7bff-a5e4-cff7e18efb7a/source.tar.gz?narHash=sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U%3D'
  → 'https://api.flakehub.com/f/pinned/edolstra/flake-compat/1.0.1/018afb31-abd1-7bff-a5e4-cff7e18efb7a/source.tar.gz?narHash=sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U%3D' (2023-10-04)
• Updated input 'naersk':
    'github:nix-community/naersk/3f976d822b7b37fc6fb8e6f157c2dd05e7e94e89' (2023-09-07)
  → 'github:nix-community/naersk/aeb58d5e8faead8980a807c840232697982d47b9' (2023-10-27)
• Updated input 'nix':
    'https://api.flakehub.com/f/pinned/NixOS/nix/2.18.1/018af406-b173-7112-9c1c-82f5b645e9d3/source.tar.gz?narHash=sha256-WNmifcTsN9aG1ONkv%2Bl2BC4sHZZxtNKy0keqBHXXQ7w%3D'
  → 'https://api.flakehub.com/f/pinned/NixOS/nix/2.20.1/018d5b86-a56c-7c2e-bad2-1cc014e40ab5/source.tar.gz?narHash=sha256-tLO1Y08d%2B1K1Tm8UpLdnx7bi3vR5dhfuZho5S/RPQ0s%3D' (2024-01-30)
• Added input 'nix/libgit2':
    'github:libgit2/libgit2/45fd9ed7ae1a9b74b957ef4f337bc3c8b3df01b5' (2023-10-18)
• Removed input 'nix/lowdown-src'
• Updated input 'nix/nixpkgs':
    'github:NixOS/nixpkgs/31ed632c692e6a36cfc18083b88ece892f863ed4' (2023-09-21)
  → 'github:NixOS/nixpkgs/a1982c92d8980a0114372973cbdfe0a307f1bdea' (2024-01-12)
• Updated input 'nixpkgs':
    'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.534806%2Brev-5e4c2ada4fcd54b99d56d7bd62f384511a7e2593/018b29e9-ae6d-72f2-993b-19cb9a64a3b5/source.tar.gz?narHash=sha256-9NJcFF9CEYPvHJ5ckE8kvINvI84SZZ87PvqMbH6pro0%3D'
  → 'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.581229%2Brev-f8e2ebd66d097614d51a56a755450d4ae1632df1/018d8a37-bd05-79cb-a42f-290c1f0ca0ce/source.tar.gz?narHash=sha256-2en1kvde3cJVc3ZnTy8QeD2oKcseLFjYPLKhIGDanQ0%3D' (2024-02-07)