flake.lock: Update

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/77826244401ea9de6e3bac47c2db46005e1f30b5?narHash=sha256-Tyw1RjYEsp5scoigs1384gIg6e0GoBVjms4aXFfRssQ%3D' (2025-07-01)
  → 'github:hercules-ci/flake-parts/644e0fc48951a860279da645ba77fe4a6e814c5e?narHash=sha256-TVcTNvOeWWk1DXljFxVRp%2BE0tzG1LhrVjOGGoMHuXio%3D' (2025-07-21)
• Updated input 'hercules-ci-effects':
    'github:hercules-ci/hercules-ci-effects/231726642197817d20310b9d39dd4afb9e899489?narHash=sha256-EaAJhwfJGBncgIV/0NlJviid2DP93cTMc9h0q6P6xXk%3D' (2025-05-23)
  → 'github:hercules-ci/hercules-ci-effects/5f2e09654b2e70ba643e41609d9f9b6640f22113?narHash=sha256-CNBgr4OZSuklGtNOa9CnTNo9%2BXceqn/EDAC1Tc43fH8%3D' (2025-07-15)
• Updated input 'nixpkgs':
    'git+https://github.com/NixOS/nixpkgs?ref=nixos-unstable-small&rev=d3807bc34e7d086b4754e1c842505570e23f9d01&shallow=1' (2025-07-12)
  → 'git+https://github.com/NixOS/nixpkgs?ref=nixos-unstable-small&rev=d02f407d2bb5a5cb2f2f75c2a7c30d5b854be11b&shallow=1' (2025-07-30)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/c9d477b5d5bd7f26adddd3f96cfd6a904768d4f9?narHash=sha256-19m7P4O/Aw/6%2BCzncWMAJu89JaKeMh3aMle1CNQSIwM%3D' (2025-07-09)
  → 'github:numtide/treefmt-nix/6b9214fffbcf3f1e608efa15044431651635ca83?narHash=sha256-8rkd13WfClfZUBIYpX5dvG3O9V9w3K9FPQ9rY14VtBE%3D' (2025-07-29)

Author: github-actions[bot]