flake.lock: Update (#325)

Flake lock file updates:

• Updated input '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':
    'github:nix-community/neovim-nightly-overlay/34eea329cd65c65338d47134817b35e9b3ed10a4?narHash=sha256-3/LFSr3Nwrj0Weg9HPTGdK2WpWUhthG56PK6XGZ/L0M%3D' (2024-08-15)
  → 'github:nix-community/neovim-nightly-overlay/b67c560eb553aa29f7e4efa729af61ff4d45c786?narHash=sha256-V1eO%2B6leWxL4etUpgxi81kC9mOUIPo/gy4GXPqcgQ6E%3D' (2024-08-16)
• Updated input 'neovim-nightly/neovim-src':
    'github:neovim/neovim/615f7bbff06c0585aacce542fac4bc823070ebee?narHash=sha256-l8J6lQ7aZRWwQ2nCL5EGGeWT5viSZQSL6lYWcuSHZKY%3D' (2024-08-14)
  → 'github:neovim/neovim/fd65422b99c7cc69e5053a852244cfc9d46d7b65?narHash=sha256-e7QFAYeZSjhQ1H0mk2awv2KcXlsepzXki3uYEUBXZ8Q%3D' (2024-08-15)
• Updated input 'neovim-nightly/nixpkgs':
    'github:NixOS/nixpkgs/daf7bb95821b789db24fc1ac21f613db0c1bf2cb?narHash=sha256-VMg6N7MryOuvSJ8Sj6YydarnUCkL7cvMdrMcnsJnJCE%3D' (2024-08-14)
  → 'github:NixOS/nixpkgs/8b908192e64224420e2d59dfd9b2e4309e154c5d?narHash=sha256-nk0RaUB5f68BwtXAYy3WAjqFhVKqIl9Z89RGycTa2vk%3D' (2024-08-15)

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