chore(lockfile): update flake.lock

Flake lock file updates:

• Updated input 'home-manager':
    'github:nix-community/home-manager/76d0c31fce2aa0c71409de953e2f9113acd5b656?narHash=sha256-gvjG95TCnUVJkvQvLMlnC4NqiqFyBdJk3o8/RwuHeaU%3D' (2025-06-28)
  → 'github:nix-community/home-manager/edc7468e12be92e926847cb02418e649b02b59dd?narHash=sha256-BLtD%2B6qWz7fQjPk2wpwyXQLGI0E30Ikgf2ppn2nVadI%3D' (2025-09-20)
• Updated input 'nixvim':
    'github:nix-community/nixvim/51edc33c9763e486beacf6a066ae41a3c18827fa?narHash=sha256-GFbRW1QCBNK/0di2Dj0WZJxdN%2BEZgTTn6gm7af4/r9s%3D' (2025-09-09)
  → 'github:nix-community/nixvim/fd0c42355026185678e93bca152cbdb3b1a67563?narHash=sha256-3OMGX/chlzLpL7OMjXUfcI%2BxGu5GMeldCnBQ5kM9lZE%3D' (2025-09-20)
• Updated input 'nixvim/nuschtosSearch':
    'github:NuschtOS/search/5feeaeefb571e6ca2700888b944f436f7c05149b?narHash=sha256-8QX7Ab5CcICp7zktL47VQVS%2BQeaU4YDNAjzty7l7TQE%3D' (2025-09-01)
  → 'github:NuschtOS/search/aa975a3757f28ce862812466c5848787b868e116?narHash=sha256-1u3xTH%2B3kaHhztPmWtLAD8LF5pTYLR2CpsPFWTFnVtQ%3D' (2025-09-19)

Author: anakmagang