update release branch

HPC_setup/setup_venv_hdfml.sh

@@ -22,7 +22,7 @@ python3 -m venv ${cur}../venv_hdfml
 source ${cur}/../venv_hdfml/bin/activate
 
 # export path for side-packages 
-export PYTHONPATH=${cur}/../venv_hdfml/lib/python3.6/site-packages:${PYTHONPATH}
+export PYTHONPATH=${cur}/../venv_hdfml/lib/python3.8/site-packages:${PYTHONPATH}
 
 echo "##### START INSTALLING requirements_HDFML_additionals.txt #####"
 pip install -r ${cur}/requirements_HDFML_additionals.txt