Add and update AppAuth

enzevalos_iphone/AppDelegate.swift

@@ -97,7 +97,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     func application(_ application: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
         if url.absoluteURL.absoluteString.hasPrefix("com.googleusercontent.apps.459157836079-csn0a9p3r8p7q6216fn5u7a6vcum80gn") {
             if let currentAuthorizationFlow = EmailHelper.singleton().currentAuthorizationFlow {
-                if currentAuthorizationFlow.resumeAuthorizationFlow(with: url) {
+                if currentAuthorizationFlow.resumeExternalUserAgentFlow(with: url) {
                     EmailHelper.singleton().currentAuthorizationFlow = nil
                     return true
                 }

enzevalos_iphone/OAuth/EmailHelper.h

@@ -27,7 +27,7 @@
 
 + (EmailHelper *_Nonnull)singleton;
 
-@property(nonatomic, strong, nullable) id<OIDAuthorizationFlowSession> currentAuthorizationFlow;
+@property(nonatomic, strong, nullable) id<OIDExternalUserAgentSession> currentAuthorizationFlow;
 @property(nonatomic, nullable) GTMAppAuthFetcherAuthorization *authorization;
 
 - (void)doEmailLoginIfRequiredOnVC:(UIViewController*_Nullable)vc completionBlock:(dispatch_block_t _Nullable )completionBlock;