Merge branch 'ansible/configurable_python_exec' into 'master'

Ansible: Configurable python exec

See merge request !1062

ansible/group_vars/HED

 ---
 ansible_user: "xcal"
+python_executable: "/gpfs/exfel/sw/calsoft/.pyenv/versions/3.11.9/bin/python3"
 install_dir: "/scratch/xcal"
 pycal_dir: "{{ install_dir }}/pycalibration"
-pycal_version: "3.14.3"
+pycal_version: "3.15.0"

ansible/install.yml

@@ -65,7 +65,7 @@
     shell: git clone ssh://git@git.xfel.eu:10022/calibration/pycalibration.git -b {{ pycal_version }} {{ pycal_dir }}
 
   - name: create venv
-    shell: /gpfs/exfel/sw/calsoft/.pyenv/versions/3.8.18/bin/python3 -m venv --prompt pycal-{{ pycal_version }} {{ pycal_dir }}/.venv
+    shell: "{{ python_executable }} -m venv --prompt pycal-{{ pycal_version }} {{ pycal_dir }}/.venv"
 
   - name: Install Pycalibration
     shell: all_proxy="http://exflproxy01.desy.de:3128" {{ pycal_dir }}/.venv/bin/pip install -e {{ pycal_dir }}