Update Legit Phone Number Length to 16

Summary: Change the legit phone number length limit to allow 16 characters long.

Reviewed By: liliarizona

Differential Revision: D61604315

fbshipit-source-id: c6d85b8f842de5e37bbcb3ca978e26de3cff8040

src/main/java/com/facebook/ads/utils/ServerSideApiUtil.java

@@ -149,7 +149,7 @@ private static String normalizePhoneNumber(String phoneNumber) {
      // Replace white spaces and hyphens
      phoneNumber = phoneNumber.replaceAll("[\\-\\s\\(\\)]+", "");
 
-     if(phoneNumber.length() < 6 || phoneNumber.length() > 15){
+     if(phoneNumber.length() < 6 || phoneNumber.length() > 16){
        throw  new IllegalArgumentException("Invalid phone number format for the passed phone number:" + phoneNumber + ". Please check the passed phone number format.");
      }