Upgrade Version 3.0.19. -> 3.0.22 needed??

Hi, FR-team! * *A while ago I installed FR 3.0.19 on Ubuntu 19.04.(ntlm_auth) The school which is using this implementation for WLAN access has a very basic use model. They need authentification functionality only. Question is: Is there an urgent need (e.g. security, new hot functionality,...) to upgrade to 3.0.22? Or do you think 3.0.19 is still good enough? Thanks Uwe