Update flake.lock

[simonrw]

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

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/b211b392b8486ee79df6cdfb1157ad2133427a29?narHash=sha256-CLU5Tsg24Ke4%2B7sH8azHWXKd0CFd4mhLWfhYgUiDBpQ%3D' (2024-05-07)
  → 'github:nixos/nixpkgs/33d1e753c82ffc557b4a585c77de43d4c922ebb5?narHash=sha256-cYApT0NXJfqBkKcci7D9Kr4CBYZKOQKDYA23q8XNuWg%3D' (2024-05-15)

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% (-0.09%) from 76.888%
when pulling b736eab on update_flake_lock_action
into 498973c on main.