Release Notes: Public API of AMPECO Charge 3.40.0

Add option split_phase to the property phases and property connectedPhase to the resources Charge Point / EVSEs / EVSE and Charge Points / Smart Charging / Update.
Add the property requireInvoiceLastUpdatedAt to Invoice details / Read and Invoice details / Create or update.
Add options for states when the parameter country of Locations / Listing is Canada or United States Minor Outlying Islands.