Update default Python and CUDA version

scripts/init.sh

@@ -6,8 +6,8 @@
 # This is what you should change for your setup
 VENV_NAME=venv         # Name of your virtualenv (default: venv)
 VENV_DIR=.             # Where to store your virtualenv (default: current directory)
-PYTHON_VERSION=3.9.14  # Python version (default: 3.9.14)
-CUDA_VERSION=11.6      # CUDA version (default: 11.6)
+PYTHON_VERSION=3.11.3  # Python version (default: 3.11.3)
+CUDA_VERSION=11.8      # CUDA version (default: 11.8)
 
 # Load modules
 module load python3/$PYTHON_VERSION