flake.lock: Update

Flake lock file updates:

• Updated input 'emacs-overlay':
    'github:nix-community/emacs-overlay/9fa1fdb259360c2d7b45bb3f4003a83b5f9f809e' (2024-01-14)
  → 'github:nix-community/emacs-overlay/eaf998b4ab1397000afeeced036fcb55e61750dd' (2024-01-19)
• Updated input 'emacs-overlay/flake-utils':
    'github:numtide/flake-utils/4022d587cbbfd70fe950c1e2083a02621806a725' (2023-12-04)
  → 'github:numtide/flake-utils/1ef2e671c3b0c19053962c07dbda38332dcebf26' (2024-01-15)
• Updated input 'emacs-overlay/nixpkgs':
    'github:NixOS/nixpkgs/9b19f5e77dd906cb52dade0b7bd280339d2a1f3d' (2024-01-13)
  → 'github:NixOS/nixpkgs/842d9d80cfd4560648c785f8a4e6f3b096790e19' (2024-01-17)
• Updated input 'emacs-overlay/nixpkgs-stable':
    'github:NixOS/nixpkgs/428544ae95eec077c7f823b422afae5f174dee4b' (2024-01-13)
  → 'github:NixOS/nixpkgs/8bf65f17d8070a0a490daf5f1c784b87ee73982c' (2024-01-17)
• Updated input 'home-manager':
    'github:nix-community/home-manager/846200eb574faa2af808ed02e653c2b8ed51fd71' (2024-01-14)
  → 'github:nix-community/home-manager/b84191db127c16a92cbdf7f7b9969d58bb456699' (2024-01-17)
• Updated input 'neovim-nightly-overlay':
    'github:nix-community/neovim-nightly-overlay/0b0c6a4cadc8eac472fe4c0512639331c930424e' (2024-01-15)
  → 'github:nix-community/neovim-nightly-overlay/e53738305c3ee233abd025cc4947a282eeb2e8c0' (2024-01-19)
• Updated input 'neovim-nightly-overlay/neovim-flake':
    'github:neovim/neovim/965dbd0e019ab2e2d7db1af57f406d7cf57716d7?dir=contrib' (2024-01-14)
  → 'github:neovim/neovim/78b000c74d631fb097bc2ada0c929153f96d9769?dir=contrib' (2024-01-18)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/9b19f5e77dd906cb52dade0b7bd280339d2a1f3d' (2024-01-13)
  → 'github:NixOS/nixpkgs/842d9d80cfd4560648c785f8a4e6f3b096790e19' (2024-01-17)