Fix the type of the message to save a lot of money 💸 (#69)

* Fix the type of the message to save a lot of money

Without specifying the type, the default is unicode and messages are split at 70 chars according to the official documentation : https://developer.vonage.com/en/messaging/sms/guides/concatenation-and-encoding

The default type is defined in class `VonageMessage` message line 26 as `public $type = 'text';`

* Update tests to add the default type "text"

* Fix one test

src/Channels/VonageSmsChannel.php

@@ -58,7 +58,8 @@ public function send($notifiable, Notification $notification)
         $vonageSms = new SMS(
             $to,
             $message->from ?: $this->from,
-            trim($message->content)
+            trim($message->content),
+            $message->type
         );
 
         $vonageSms->setClientRef($message->clientReference);

tests/Unit/Channels/VonageSmsChannelTest.php

@@ -29,7 +29,8 @@ public function testSmsIsSentViaVonage()
         $mockSms = (new SMS(
             '5555555555',
             '4444444444',
-            'this is my message'
+            'this is my message',
+            'text'
         ));
 
         $vonage->shouldReceive('sms->send')
@@ -46,7 +47,8 @@ public function testSmsIsSentViaVonageWithCustomClient()
             ->with(IsEqual::equalTo(new SMS(
                 '5555555555',
                 '4444444444',
-                'this is my message'
+                'this is my message',
+                'text'
             )))
             ->once();
 
@@ -177,7 +179,8 @@ public function testCallbackIsApplied()
         $mockSms = (new SMS(
             '5555555555',
             '4444444444',
-            'this is my message'
+            'this is my message',
+            'text'
         ));
 
         $mockSms->setDeliveryReceiptCallback('https://example.com');