Update cesiumVersions.php

cesiumVersions.php

 <?php
 
 $cesiumVersions = [
-	   'home' => '1.3.11', 
-	'android' => '1.3.11', 
-	  'linux' => '1.3.11', 
-	'windows' => '1.3.11', 
-	    'mac' => '1.3.11', 
-	    'web' => '1.3.11'
+	   'home' => '1.6.0', 
+	'android' => '1.6.0', 
+	  'linux' => '1.6.0', 
+	'windows' => '1.6.0', 
+	    'mac' => '1.6.0', 
+	    'web' => '1.6.0'
 ];