Update gox in Docker
What does this MR do?
Update the included Gox in the Docker container for CI.
Why was this MR needed?
This is a requirement for my upcoming RISC-V PR.
What's the best way to test this MR?
Check if the CI still passes (if ran from the main project).
What are the relevant issue numbers?
None
This MR is a copy of the MR !4220 (closed), moved to the community fork.