flake.lock: Update

Flake lock file updates:

• Updated input 'ghostty':
    'github:ghostty-org/ghostty/12bf107bcbac28202c5fab828416e8aa43b1b798?narHash=sha256-7s7U8%2BBetbUdBewwqdzCVxR5nbc2wo%2BhQKFZw%2BjKsco%3D' (2024-09-09)
  → 'github:ghostty-org/ghostty/67abd8804ede96429ee8284e3222c1a1229de877?narHash=sha256-gjcfmWPuI7zUlgxUOlqqijgZR17Nq8sfMEcsYLG0x/A%3D' (2024-09-10)
• Updated input 'neovim-plugins-nightly-overlay':
    'github:zachcoyle/neovim-plugins-nightly-overlay/8a05981d75519b4630fe0be0ca07966ec6bc5d12?narHash=sha256-XbsCk1V3wQhlJuVuzU99KtQ%2Bny/iX3DtaEL5WIv5jiw%3D' (2024-09-10)
  → 'github:zachcoyle/neovim-plugins-nightly-overlay/1829875948733144dc59513d414d507cb2eac749?narHash=sha256-ucU7FAIBJmArEqCjP4AzR2pVNu5L5/5RWto5XKPWjT4%3D' (2024-09-10)
• Updated input 'nur':
    'github:nix-community/nur/c463727bffa9bcaec18cc8bbd2226e220aba751b?narHash=sha256-Sfg6DPQ11wf2lUCv20CwIpWig0BVR/h/bmO4EWNGNZw%3D' (2024-09-10)
  → 'github:nix-community/nur/eb644ecf9a4b3c71a2ba337ccd1ebab729b6feb0?narHash=sha256-kx9kjjTVm66uvrGKWw1KVrTCm%2BqmDZlM91xDZeqZynY%3D' (2024-09-10)