test(Auth): ConfirmSignIn unit tests (#984)

* rebase

* ConfirmSignIn unit tests PR

* Update Podfile.lock

Co-authored-by: Guo <[email protected]>

Author: 618coffee

AmplifyPlugins/Auth/AWSCognitoAuthPlugin/Request/AuthConfirmSignInRequest+Validate.swift

@@ -12,8 +12,8 @@ extension AuthConfirmSignInRequest {
     func hasError() -> AuthError? {
         guard !challengeResponse.isEmpty else {
             return AuthError.validation(AuthPluginErrorConstants.confirmSignInChallengeResponseError.field,
-                                               AuthPluginErrorConstants.confirmSignInChallengeResponseError.errorDescription,
-                                               AuthPluginErrorConstants.confirmSignInChallengeResponseError.recoverySuggestion)
+                                        AuthPluginErrorConstants.confirmSignInChallengeResponseError.errorDescription,
+                                        AuthPluginErrorConstants.confirmSignInChallengeResponseError.recoverySuggestion)
         }
         return nil
     }