flake.lock: Update (#326)

Flake lock file updates:

• Updated input 'neovim-nightly':
    'github:nix-community/neovim-nightly-overlay/b67c560eb553aa29f7e4efa729af61ff4d45c786?narHash=sha256-V1eO%2B6leWxL4etUpgxi81kC9mOUIPo/gy4GXPqcgQ6E%3D' (2024-08-16)
  → 'github:nix-community/neovim-nightly-overlay/ee00d368ae6a9015004d473eba26a79b343a0c45?narHash=sha256-CWnJUYtqcfnJZrTYLmdo6FzKXJ4Y4Z%2BY6RBR7wgnAKA%3D' (2024-08-17)
• Updated input 'neovim-nightly/git-hooks':
    'github:cachix/git-hooks.nix/c7012d0c18567c889b948781bc74a501e92275d1?narHash=sha256-qbhjc/NEGaDbyy0ucycubq4N3//gDFFH3DOmp1D3u1Q%3D' (2024-08-09)
  → 'github:cachix/git-hooks.nix/bfef0ada09e2c8ac55bbcd0831bd0c9d42e651ba?narHash=sha256-yezvUuFiEnCFbGuwj/bQcqg7RykIEqudOy/RBrId0pc%3D' (2024-08-16)
• Updated input 'neovim-nightly/neovim-src':
    'github:neovim/neovim/fd65422b99c7cc69e5053a852244cfc9d46d7b65?narHash=sha256-e7QFAYeZSjhQ1H0mk2awv2KcXlsepzXki3uYEUBXZ8Q%3D' (2024-08-15)
  → 'github:neovim/neovim/172cc23d88585dd7520726c2ebbba4ed7639e348?narHash=sha256-Qi/iqMZxN5jsP99neBoKtcHn8AtqwmKmxtSVrRijRNE%3D' (2024-08-16)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/8b908192e64224420e2d59dfd9b2e4309e154c5d?narHash=sha256-nk0RaUB5f68BwtXAYy3WAjqFhVKqIl9Z89RGycTa2vk%3D' (2024-08-15)
  → 'github:nixos/nixpkgs/a0d6390cb3e82062a35d0288979c45756e481f60?narHash=sha256-uljX21%2BD/DZgb9uEFFG2dkkQbPZN%2Big4Z6%2BUCLWFVAk%3D' (2024-08-17)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>