flake.lock: Update

Flake lock file updates:

• Updated input 'nix-index-database':
    'github:Mic92/nix-index-database/25d6369c232bbea1ec1f90226fd17982e7a0a647' (2023-09-24)
  → 'github:Mic92/nix-index-database/2902dc66f64f733bfb45754e984e958e9fe7faf9' (2023-10-08)
• Updated input 'nixos-wsl':
    'github:nix-community/NixOS-WSL/cadde47d123d1a534c272b04a7582f1d11474c48' (2023-09-30)
  → 'github:nix-community/NixOS-WSL/337edef90c8abe35b42e95aecf510a063dad02dd' (2023-10-02)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/5cfafa12d57374f48bcc36fda3274ada276cf69e' (2023-09-27)
  → 'github:nixos/nixpkgs/5a237aecb57296f67276ac9ab296a41c23981f56' (2023-10-07)
• Updated input 'nixpkgs-unstable':
    'github:nixos/nixpkgs/8a86b98f0ba1c405358f1b71ff8b5e1d317f5db2' (2023-09-27)
  → 'github:nixos/nixpkgs/87828a0e03d1418e848d3dd3f3014a632e4a4f64' (2023-10-06)
• Updated input 'nur':
    'github:nix-community/NUR/9098ede076f5cf5a00e611778710e24f3c8db308' (2023-09-30)
  → 'github:nix-community/NUR/e59a27dcfd30d62a5927fe9f89c273cc15d09c47' (2023-10-08)