chore(example/simple): Update flake.lock

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/154bcb95ad51bc257c2ce4043a725de6ca700ef6?narHash=sha256-7pjpeQlZUNQ4eeVntytU3jkw9dFK3k1Htgk2iuXjaD8%3D' (2024-08-09)
  → 'github:nixos/nixpkgs/cd7b95ee3725af7113bacbce91dd6549cee58ca5?narHash=sha256-OTDg91%2BZzs2SpU3csK4xVdSQFoG8cK1lNUwKmTqERyE%3D' (2024-08-17)
• Updated input 'process-compose-flake':
    'github:Platonic-Systems/process-compose-flake/9344fac44edced4c686721686a6ad904d067c546?narHash=sha256-%2BRrlkAVZx0QhyeHAGFJnjST%2B/7Dc3zsDU3zAKXoDXaI%3D' (2024-06-10)
  → 'github:Platonic-Systems/process-compose-flake/dcf3082c74e944e5d260a6d61780aaf3aff179c8?narHash=sha256-TPGI7di%2BaL5LBlmfqGVloGUXOAwy8CRj5qsSHWiS2v4%3D' (2024-08-16)
• Updated input 'services-flake':
    'github:juspay/services-flake/e0f1539f9abeaf5613f80a2520bc74087935ad42?narHash=sha256-0JQ6PxghKNXt9LQQ1eAQ7Z60OM8QgfGOsKug2Yj8t%2BI%3D' (2024-08-05)
  → 'github:juspay/services-flake/034722b4046bf687e8fafa6626a88890abfad33f?narHash=sha256-FJOvmGACkAPnnOQE02xxhUg913V5g%2BXoRrXWt40t/fQ%3D' (2024-08-11)