Update Mix3, Mix4 and ECEMF scenarios

[johannah-pik]

This update includes:

• A change in the service life of trucks and busses from 10 to 7 years for all scenarios
• ICE ban in 2035 for EU regions for SSP2EU Mix3, Mix4 and ECEMF scenarios
• Preference change to slightly increase heavy-duty hydrogen truck shares in hydrogen scenarios (HydrHype4 and ECEMG HighH2 scenarios)
• Preference change to even further increase heavy-duty electric truck shares in Mix3, Mix4 and highEl ECEMF scenarios based on results from ACEA project