flake.lock: Update

[drupol]

Automated changes by the update-flake-lock GitHub Action.

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/c19d62ad2265b16e2199c5feb4650fe459ca1c46?narHash=sha256-cFgdjyK/VBM3hB1RfFHXcI/VOCBVAv813s1upHKX7bI%3D' (2024-07-21)
  → 'github:NixOS/nixpkgs/038fb464fcfa79b4f08131b07f2d8c9a6bcc4160?narHash=sha256-Ul3rIdesWaiW56PS/Ak3UlJdkwBrD4UcagCmXZR9Z7Y%3D' (2024-07-28)

Running GitHub Actions on this PR

GitHub Actions will not run workflows on pull requests which are opened by a GitHub Action.

To run GitHub Actions workflows on this PR, run:

git branch -D update_flake_lock_action
git fetch origin
git checkout update_flake_lock_action
git commit --amend --no-edit
git push origin update_flake_lock_action --force