Update SJFirebaseAuthPhone.java

Signed-off-by: Kenechukwu Akubue <[email protected]>

sjfirebase/src/main/java/com/simplejnius/sjfirebase/SJFirebaseAuthPhone.java

@@ -53,7 +53,7 @@ public static void resendVerificationCode(
         PhoneAuthProvider.verifyPhoneNumber(options);
     }
 
-    private PhoneAuthCredential verifyPhoneNumberWithCode(String verificationId, String code) {
+    public static PhoneAuthCredential verifyPhoneNumberWithCode(String verificationId, String code) {
         return PhoneAuthProvider.getCredential(verificationId, code);
     }
 }