chore(example): Update flake.lock

Flake lock file updates:

• Updated input 'haskell-flake':
    'github:srid/haskell-flake/1c26ac95f69e563781feccd6610fd7637bebbd10?narHash=sha256-blv%2BxY7A3BVxxKHfJjCXb9KaTzPHlb9SWfs0WqDvKZE%3D' (2025-09-28)
  → 'github:srid/haskell-flake/45adef5a6bd3265c5947b404da0eb156bf1e59bb?narHash=sha256-5RlXG6Tw5UzSMWlaq8lTOP6DZOtxozx64EjV3Eeme8U%3D' (2025-10-07)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/27ac93958969b5f3dccd654b402599cf3de633ac?narHash=sha256-hhM8SUI6kQMei5TImFdNQy9EDT8g2hAD161DUtbfAy0%3D' (2025-10-04)
  → 'github:nixos/nixpkgs/870493f9a8cb0b074ae5b411b2f232015db19a65?narHash=sha256-BMsGVfKl4Q80Pr9T1AkCRljO1bpwCmY8rTBVj8XGuhA%3D' (2025-10-10)

Author: github-actions[bot]