chore(test): Update flake.lock

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/4989a246d7a390a859852baddb1013f825435cee?narHash=sha256-kMBQ5PRiFLagltK0sH%2B08aiNt3zGERC2297iB6vrvlU%3D' (2024-12-17)
  → 'github:nixos/nixpkgs/7cc0bff31a3a705d3ac4fdceb030a17239412210?narHash=sha256-7QEFnKkzD13SPxs%2BUFR5bUFN2fRw%2BGlL0am72ZjNre4%3D' (2024-12-27)
• Updated input 'services-flake':
    'github:juspay/services-flake/acc7f3f9f30621b469ca3ee511592a68a4437312?narHash=sha256-u%2BfkdD8%2B0/0J8k0/YKDc3ReUcYZZGiftGL%2BSz2wdRqM%3D' (2024-12-15)
  → 'github:juspay/services-flake/89e84a002000634dc4f064352594912e98164ce8?narHash=sha256-VGhKyJf%2B26gGpGKpa6arKJXai/gyPSP3l02yZQbo4NQ%3D' (2024-12-22)

Author: github-actions[bot]