flake.lock: Update

Flake lock file updates:

• Updated input 'nightly':
    'github:nix-community/neovim-nightly-overlay/f12eb4fd26fd545f50ccb43637f9f72e4a0ef490?narHash=sha256-jbQXC1STBBX/APf02PFEFCC4w1IRUr7uow%2B%2BVpPEYUY%3D' (2024-12-05)
  → 'github:nix-community/neovim-nightly-overlay/3930a71f90bacc656e8bdf19cc0faa9ebf10353a?narHash=sha256-x8slAzUe1gopASFNhnHO9DmWXvnF7u27YMSwTmIY8bU%3D' (2024-12-07)
• Updated input 'nightly/neovim-src':
    'github:neovim/neovim/8f84167c30692555d3332565605e8a625aebc43c?narHash=sha256-TAruRTODE/Om/EGOZwPaEPNY6DlgeB6hdYQNSyGNIHk%3D' (2024-12-04)
  → 'github:neovim/neovim/517ecb85f58ed6ac8b4d5443931612e75e7c7dc2?narHash=sha256-QjFVx/zMyutuW1TWzOKEe5cY7YGqvPkRhi9wQHY52Yo%3D' (2024-12-06)
• Updated input 'nightly/nixpkgs':
    'github:NixOS/nixpkgs/2c15aa59df0017ca140d9ba302412298ab4bf22a?narHash=sha256-9hbb1rqGelllb4kVUCZ307G2k3/UhmA8PPGBoyuWaSw%3D' (2024-12-02)
  → 'github:NixOS/nixpkgs/566e53c2ad750c84f6d31f9ccb9d00f823165550?narHash=sha256-FLYY5M0rpa5C2QAE3CKLYAM6TwbKicdRK6qNrSHlNrE%3D' (2024-12-03)