flake.lock: Update

Flake lock file updates:

• Updated input 'home-manager':
    'github:nix-community/home-manager/a561ad6ab38578c812cc9af3b04f2cc60ebf48c9' (2024-04-07)
  → 'github:nix-community/home-manager/8fdf329526f06886b53b94ddf433848a0d142984' (2024-04-13)
• Updated input 'neovim-nightly-overlay':
    'github:nix-community/neovim-nightly-overlay/4cb2a8580de0498dd38eb90791728547b5826331' (2024-04-08)
  → 'github:nix-community/neovim-nightly-overlay/8fa4fbe03aa7475441dd1b9c62e36feea083bfb0' (2024-04-14)
• Updated input 'neovim-nightly-overlay/neovim-flake':
    'github:neovim/neovim/541c2d3816cdef9aba7f55f74908fa07d0cfa3ec?dir=contrib' (2024-04-07)
  → 'github:neovim/neovim/a92822835521574710a830a7de0e692bf7517fb8?dir=contrib' (2024-04-13)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/ff0dbd94265ac470dda06a657d5fe49de93b4599' (2024-04-06)
  → 'github:NixOS/nixpkgs/1042fd8b148a9105f3c0aca3a6177fd1d9360ba5' (2024-04-10)
• Updated input 'rycee':
    'gitlab:rycee/nur-expressions/ff38291e54d5daddc742353da9e1a59eb1edcc37' (2024-04-08)
  → 'gitlab:rycee/nur-expressions/612713b8c55be97af5b4ff75ab5f427fde25328c' (2024-04-13)