fix(payment_methods): mask the email address being logged in the payment_method_list response logs (#4749)

crates/api_models/src/payment_methods.rs

@@ -531,7 +531,8 @@ pub struct RequiredFieldInfo {
     #[schema(value_type = FieldType)]
     pub field_type: api_enums::FieldType,
 
-    pub value: Option<String>,
+    #[schema(value_type = Option<String>)]
+    pub value: Option<masking::Secret<String>>,
 }
 
 #[derive(Debug, Clone, serde::Serialize, ToSchema)]

crates/router/src/core/payment_methods/cards.rs

@@ -2268,7 +2268,7 @@ pub async fn list_payment_methods(
                                             .as_ref()
                                             .and_then(|r| get_val(key.to_owned(), r));
                                         if let Some(s) = temp {
-                                            val.value = Some(s)
+                                            val.value = Some(s.into())
                                         };
                                     }
                                 }