Changes to Create Virtual Mailbox

added the new optional request property capabilities/forwardMailTo/anyOf[#/components/schemas/ContactCreate]/oneOf[#/components/schemas/ContactCreateWithCompanyName]/secret

added the new optional request property capabilities/forwardMailTo/anyOf[#/components/schemas/ContactCreate]/oneOf[#/components/schemas/ContactCreateWithFirstName]/secret

added the optional property capabilities/allOf[#/components/schemas/VirtualMailboxCapabilities]/forwardMailTo/allOf[#/components/schemas/Contact]/secret to the response with the 201 status

endpoint added