Servoy has upgraded Tomcat from 8.5.57 to 8.5.64

We are in the process of upgrading from Servoy 2020-06 to Servoy 2022-03.
In the 2021.06-3 release notes it says Servoy has upgraded Tomcat from 8.5.57 to 8.5.64.
What was the reason for this change?
The current available tomcat series 8 version is 8.5.83.
Can we stay with 8.5.57 or should be move to 8.5.64 or even to a later version than that?
thanks,
Terry
In the 2021.06-3 release notes it says Servoy has upgraded Tomcat from 8.5.57 to 8.5.64.
What was the reason for this change?
The current available tomcat series 8 version is 8.5.83.
Can we stay with 8.5.57 or should be move to 8.5.64 or even to a later version than that?
thanks,
Terry