fix(webhook): specify permitted auth subclasses explicitly to stabili…

…ze the template generation (#2775)

(cherry picked from commit 5f93d4a)

connectors/webhook/src/main/java/io/camunda/connector/inbound/model/WebhookAuthorization.java

@@ -33,7 +33,7 @@
     group = "authorization",
     description = "Choose the authorization type",
     defaultValue = "NONE")
-public sealed interface WebhookAuthorization {
+public sealed interface WebhookAuthorization permits None, BasicAuth, ApiKeyAuth, JwtAuth {
 
   @TemplateSubType(id = "NONE", label = "None")
   final class None implements WebhookAuthorization {}