flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/98708c5cb5a824ba82d6fa7cfe5e3323bb36e3df?narHash=sha256-juLHfkrYLKLlGqb6SGQW6TrdLF9K8PZJC9sb40vfDB4%3D' (2025-08-01)
  → 'github:NixOS/nixpkgs/3b63f31ef13f96726cd3357391519eee8a91792d?narHash=sha256-irQWX51wpIzcUG4xQ0yuHEE47Xm%2BG7h98NxgEZizipc%3D' (2025-09-01)
• Updated input 'pre-commit-hooks':
    'github:cachix/git-hooks.nix/16ec914f6fb6f599ce988427d9d94efddf25fe6d?narHash=sha256-wibppH3g/E2lxU43ZQHC5yA/7kIKLGxVEnsnVK1BtRg%3D' (2025-06-24)
  → 'github:cachix/git-hooks.nix/e891a93b193fcaf2fc8012d890dc7f0befe86ec2?narHash=sha256-RF7j6C1TmSTK9tYWO6CdEMtg6XZaUKcvZwOCD2SICZs%3D' (2025-08-23)
• Updated input 'pre-commit-hooks/flake-compat':
    'github:edolstra/flake-compat/0f9255e01c2351cc7d116c072cb317785dd33b33?narHash=sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U%3D' (2023-10-04)
  → 'github:edolstra/flake-compat/9100a0f413b0c601e0533d1d94ffd501ce2e7885?narHash=sha256-CIVLLkVgvHYbgI2UpXvIIBJ12HWgX%2BfjA8Xf8PUmqCY%3D' (2025-05-12)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/6b9214fffbcf3f1e608efa15044431651635ca83?narHash=sha256-8rkd13WfClfZUBIYpX5dvG3O9V9w3K9FPQ9rY14VtBE%3D' (2025-07-29)
  → 'github:numtide/treefmt-nix/1aabc6c05ccbcbf4a635fb7a90400e44282f61c4?narHash=sha256-F1oFfV51AE259I85av%2BMAia221XwMHCOtZCMcZLK2Jk%3D' (2025-08-31)

Author: github-actions[bot]