[Updated cylc-ui to 2.4.0](https://github.com/cylc/cylc-ui/blob/master/CHANGES.md)
🔧 Fixes
[558](https://github.com/cylc/cylc-uiserver/pull/558) - Permit Jupyter Lab to be run in the same Jupyter Server instance as the Cylc UI Server in standalone mode (i.e. via `cylc gui`), note it was already possible to do this in multi-user mode (i.e. via `cylc hub`).
[570](https://github.com/cylc/cylc-uiserver/pull/570) - Fix an issue that could impose a low limit on the number of active workflows the server is able to track.