Update example/flake.lock

[github-actions[bot]]

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

Flake lock file updates:

• Updated input 'haskell-flake':
    'github:srid/haskell-flake/53e434d194f08c5ef9b2ba448b250f0321e6d529?narHash=sha256-TDnvGInwe24zqhUVmQOLt3EkfP9vVpWIwfScJPopTg0%3D' (2024-04-20)
  → 'github:srid/haskell-flake/2ee7904390ce78a81d0f66fcc98bf4c32d128d33?narHash=sha256-R2k/UG5XtyTtmezRs0HZZ9MlvhWXtkyHR%2BngEAWrtZI%3D' (2024-04-25)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/fd16bb6d3bcca96039b11aa52038fafeb6e4f4be?narHash=sha256-LJbHQQ5aX1LVth2ST%2BKkse/DRzgxlVhTL1rxthvyhZc%3D' (2024-04-20)
  → 'github:nixos/nixpkgs/d6f6eb2a984f2ba9a366c31e4d36d65465683450?narHash=sha256-Yg5D5LhyAZvd3DZrQQfJAVK8K3TkUYKooFtH1ulM0mw%3D' (2024-04-27)

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