SMS number can now be unset from a contact
SMS number can now be unset if the contact has a valid EMAIL address. Also, error for duplicate SMS will now be thrown if the SMS is updated to a number which belongs to an already existing contact.
Routes:
https://developers.sendinblue.com/reference#createcontact
https://developers.sendinblue.com/reference#updatecontact
SMS number validation improved
SMS number passed in Contact create/update api will only be accepted if passed with proper country code & number combination.
Some examples of accepted numbers
+91 9788824675
0091 9788824675
919788824675
+44 (0)7771234567
+1 (206) 123-4567
