Revert "break CI"

This reverts commit a1f59f5.

Author: tcompa

first_config_script.sh

@@ -11,7 +11,6 @@ sudo add-apt-repository ppa:deadsnakes/ppa -y
 apt update -y
 apt upgrade -y
 apt install python3.12-venv pipx -y
-apt install python3.99
 apt install munge slurmd slurm-client slurmctld slurmdbd mariadb-server -y
 apt install libgl1 -y   # needed for `opencv-python` package
 apt install cifs-utils  -y # needed for mounting CIFS shares