Hello,
I am not from Husarion team but the simulation environment provided by Husarion (and mentioned in this thread ) supports Jazzy with the release 2.3.0 .
In this post it is also mentioned how Jazzy will be used so I don’t know if besides the compatibility problems, ROS2 communication between Humble on your side and Jazzy on husarnet side will work.
P.S. The Husarnet documentation lists some methods for communication using ROS2 in this page and some of them are compatible with Humble. Have you tested them yet?