Update flake.lock

[simonrw]

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

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/33d1e753c82ffc557b4a585c77de43d4c922ebb5?narHash=sha256-cYApT0NXJfqBkKcci7D9Kr4CBYZKOQKDYA23q8XNuWg%3D' (2024-05-15)
  → 'github:nixos/nixpkgs/5710852ba686cc1fd0d3b8e22b3117d43ba374c2?narHash=sha256-8BO3B7e3BiyIDsaKA0tY8O88rClYRTjvAp66y%2BVBUeU%3D' (2024-05-21)

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

[coveralls]

coverage: 76.797%. remained the same when pulling 671576bebc2a9fad603d97a1e260165a165456b2 on update_flake_lock_action into 946838a860d70695f50ca4cc9b7514afa5c62f8f on main.