build(pix-ctl): Bump flake.lock script

Flake lock file updates:

• Updated input 'ctl-nix/ctl/db-sync/customConfig':
    'path:./custom-config?lastModified=1&narHash=sha256-Zd5w1I1Dwt783Q4WuBuCpedcwG1DrIgQGqabyF87prM%3D' (1970-01-01)
  → 'path:./custom-config'
• Updated input 'script':
    'github:klarkc/nix-templates/e81252c087b599c9b57ae84bbda235acc468ecd3?dir=iogx-plutus&narHash=sha256-jChw8n%2BYscQB9P3jXQxMWP/%2BOIzcQBci%2BR8Ht%2BF0bC0%3D' (2024-05-12)
  → 'github:klarkc/nix-templates/6b22f3460e969ca0f4e0e5c26018416a830a440b?dir=iogx-plutus&narHash=sha256-AAaA84fQ6Z1Gq/qS6lhH1PSy3nfSPdmmHCnvND2XWL8%3D' (2025-07-24)

Author: github-actions[bot]