In my case I was able to download libgconf-2.so* from the Arch Linux archives, you can extract the contents of /usr/lib to your /usr/local/lib folder and force Unity Hub to load it by adding LD_LIBRARY_PATH=/usr/local/lib to the launch env vars.
In my case I was able to download libgconf-2.so* from the Arch Linux archives, you can extract the contents of /usr/lib to your /usr/local/lib folder and force Unity Hub to load it by adding LD_LIBRARY_PATH=/usr/local/lib to the launch env vars.