… in Python 3.14; use value instead

The attribute check within the 'ode.py' script has been updated. Previously, it checked whether the event has an attribute 's', however, this has been modified to check for the 'value' attribute instead. This ensures the correct attribute is being checked for the ongoing processes.

Adjusted a condition in 'ode.py' to handle changes in sys.version_info from 3.12 onwards. This fix ensures compatibility with newer Python versions as system requirements are now checked before the execution of certain commands.