Update rcssserver3d to 0.7.5
This updates rcssserver3d to version 0.7.5. Also, Ubuntu 20.04 is being used instead of Ubuntu 18.04 (as that is likely going to be the version used for the upcoming competitions).
The 17.0 major release is coming on May 16, 2024! This version brings many exciting improvements to GitLab, but also removes some deprecated features. We are introducing three breaking change windows during which we expect breaking changes to be deployed to GitLab.com. You can read more about it on our blogpost. The second breaking change window begins 2024-04-29 09:00 UTC and ends 2024-05-01 22:00 UTC.
This updates rcssserver3d to version 0.7.5. Also, Ubuntu 20.04 is being used instead of Ubuntu 18.04 (as that is likely going to be the version used for the upcoming competitions).