flake.lock: Update

Flake lock file updates:

• Updated input 'flake-utils':
    'github:numtide/flake-utils/1ef2e671c3b0c19053962c07dbda38332dcebf26' (2024-01-15)
  → 'github:numtide/flake-utils/d465f4819400de7c8d874d50b982301f28a84605' (2024-02-28)
• Updated input 'gitignore':
    'github:hercules-ci/gitignore.nix/43e1aa1308018f37118e34d3a9cb4f5e75dc11d5' (2023-12-29)
  → 'github:hercules-ci/gitignore.nix/637db329424fd7e46cf4185293b9cc8c88c95394' (2024-02-28)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/548a86b335d7ecd8b57ec617781f5e652ab0c38e' (2024-02-26)
  → 'github:NixOS/nixpkgs/ebe6e807793e7c9cc59cf81225fdee1a03413811' (2024-02-29)
• Updated input 'zig-overlay':
    'github:mitchellh/zig-overlay/e1c418c2315adaeca6f27fd8919141eb7992866d' (2024-02-27)
  → 'github:mitchellh/zig-overlay/bfa983b61aa539e64703404f434f77b10d41c37e' (2024-02-29)