feat: update flake.lock (#75)

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/a84ebe20c6bc2ecbcfb000a50776219f48d134cc?narHash=sha256-mNqIplmEohk5jRkqYqG19GA8MbQ/D4gQSK0Mu4LvfRQ%3D' (2025-03-19)
  → 'github:nixos/nixpkgs/5e5402ecbcb27af32284d4a62553c019a3a49ea6?narHash=sha256-gWd4urRoLRe8GLVC/3rYRae1h%2BxfQzt09xOfb0PaHSk%3D' (2025-03-27)

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Author: github-actions[bot]