Update vehicles-you-can-drive-v2.yml

From logic doc: https://docs.google.com/a/digital.cabinet-office.gov.uk/document/d/1Web_AXcBFCJqnLiyHNRg9l4qj5-x_KWYhrZxbfqB3aU/edit

Minibus updates
Merge pull request #824 from keithiopia/patch-3

Update vehicles-you-can-drive-v2.yml