chore(example): Update llm/flake.lock

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/e913ae340076bbb73d9f4d3d065c2bca7caafb16?narHash=sha256-Ds1QpobBX2yoUDx9ZruqVGJ/uQPgcXoYuobBguyKEh8%3D' (2024-06-11)
  → 'github:nixos/nixpkgs/90338afd6177fc683a04d934199d693708c85a3b?narHash=sha256-%2B1xgeIow4gJeiwo4ETvMRvWoircnvb0JOt7NS9kUhoM%3D' (2024-06-21)
• Updated input 'services-flake':
    'github:juspay/services-flake/7df30ebbf3b70ce85bd9ea9f9389e09e692fada5?narHash=sha256-rvn2QmKyzyZP4nsX9dbTftUqHl0yrJ6MWPXIA0s8jVY%3D' (2024-06-17)
  → 'github:juspay/services-flake/5ffb937b40e1f800061f8412edadd2271990296b?narHash=sha256-dX5gfTvxMywE8hzDted1O1NhylypS2FYsX4YvxLzDWY%3D' (2024-06-23)