flake.lock: Update (#321)

Flake lock file updates:

• Updated input 'git-hooks':
    'github:cachix/git-hooks.nix/3c977f1c9930f54066c085305b4b2291385e7a73?narHash=sha256-YpzywjTAUHRRHcO8zz9x2gYqJ0JmZlcB9%2BRaUvD89qM%3D' (2024-08-07)
  → 'github:cachix/git-hooks.nix/c7012d0c18567c889b948781bc74a501e92275d1?narHash=sha256-qbhjc/NEGaDbyy0ucycubq4N3//gDFFH3DOmp1D3u1Q%3D' (2024-08-09)
• Updated input 'neovim-nightly':
    'github:nix-community/neovim-nightly-overlay/c6cba7f05ee7804ea59c610212c9bd8e9127bed0?narHash=sha256-/vh3KPnj5%2BmA4wghzu8CSXKnYetgR7bPsMuLRXfLB6w%3D' (2024-08-08)
  → 'github:nix-community/neovim-nightly-overlay/585d8caecf1561bec33529f2f890b234d8c5dabb?narHash=sha256-vPk1MWy3atw4OxFWXdGpeLwqmx87Ph/qdAsGn7e1cy4%3D' (2024-08-09)
• Updated input 'neovim-nightly/neovim-src':
    'github:neovim/neovim/f35d5afbf1bae81896d4b959c7d99cf50e0c306f?narHash=sha256-2ETVBWn3QJD1Hlztvs8tKsTKFxE3duhSdJZGpt4F1IE%3D' (2024-08-07)
  → 'github:neovim/neovim/b9913191be0b4884d92db794e2eb92641523a415?narHash=sha256-W1Jz/sINvHUXqZIGqCoZutW7U5fDCG2xI1IcX5UjIbI%3D' (2024-08-08)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/f5129fb42b9c262318130a97b47516946da3e7d7?narHash=sha256-O/kxmybNecC3Efr6ITOdtCzFv90/B2Iiedavj5aRWt0%3D' (2024-08-07)
  → 'github:nixos/nixpkgs/13fe00cb6c75461901f072ae62b5805baef9f8b2?narHash=sha256-9AVY0ReCmSGXHrlx78%2B1RrqcDgVSRhHUKDVV1LLBy28%3D' (2024-08-08)

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