build(nix): update dependencies

• Updated input 'advisory-db':
    'github:rustsec/advisory-db/b3afca3' (2025-12-18)
  → 'github:rustsec/advisory-db/1e84932' (2026-02-27)
• Updated input 'fenix':
    'github:nix-community/fenix/6399553' (2025-12-11)
  → 'github:nix-community/fenix/92d9125' (2026-02-27)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/fface27' (2025-12-10)
  → 'github:rust-lang/rust-analyzer/56b59a8' (2026-02-26)
• Updated input 'nixlib':
    'github:nix-community/nixpkgs.lib/2075416' (2025-12-14)
  → 'github:nix-community/nixpkgs.lib/36b8fcb' (2026-02-22)
• Updated input 'nixpkgs-darwin':
    'github:nixos/nixpkgs/bc80944' (2025-12-17)
  → 'github:nixos/nixpkgs/3e3f3c7' (2026-01-17)
• Updated input 'nixpkgs-nixos':
    'github:nixos/nixpkgs/2b0d2b4' (2025-12-17)
  → 'github:nixos/nixpkgs/ac62194' (2026-01-02)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/96617c9' (2025-12-18)
  → 'github:oxalica/rust-overlay/9b29654' (2026-02-27)

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Author: github-actions[bot]