feat: run nix flake update

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/3876f6b87db82f33775b1ef5ea343986105db764?narHash=sha256-ZaMw0pdoUKigLpv9HiNDH2Pjnosg7NBYMJlHTIsHEUo%3D' (2025-03-01)
  → 'github:hercules-ci/flake-parts/9305fe4e5c2a6fcf5ba6a3ff155720fbe4076569?narHash=sha256-tYBdgS56eXYaWVW3fsnPQ/nFlgWi/Z2Ymhyu21zVM98%3D' (2025-06-08)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/c570c1f5304493cafe133b8d843c7c1c4a10d3a6?narHash=sha256-tpJsHMUPEhEnzySoQxx7%2BkA%2BKUtgWqvlcUBqROYNNt0%3D' (2025-03-29)
  → 'github:NixOS/nixpkgs/d883b6213afa179b58ba8bace834f1419707d0ad?narHash=sha256-hJ7XMNVsTnnbV2NPmStCC07gvv5l2x7%2BSkb7hyUzazg%3D' (2025-06-19)
• Updated input 'sops-nix':
    'github:Mic92/sops-nix/3f2412536eeece783f0d0ad3861417f347219f4d?narHash=sha256-9lfmSZLz6eq9Ygr6cCmvQiiBEaPb54pUBcjvbEMPORc%3D' (2025-03-03)
  → 'github:Mic92/sops-nix/77c423a03b9b2b79709ea2cb63336312e78b72e2?narHash=sha256-Rr7Pooz9zQbhdVxux16h7URa6mA80Pb/G07T4lHvh0M%3D' (2025-06-17)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/3d0579f5cc93436052d94b73925b48973a104204?narHash=sha256-mL1szCeIsjh6Khn3nH2cYtwO5YXG6gBiTw1A30iGeDU%3D' (2025-02-17)
  → 'github:numtide/treefmt-nix/a05be418a1af1198ca0f63facb13c985db4cb3c5?narHash=sha256-eEy8cuS0mZ2j/r/FE0/LYBSBcIs/MKOIVakwHVuqTfk%3D' (2025-06-06)

Author: actions-user