fix: make actions property required in MessageAttachmentAction type

Author: ahmed-n-abdeltwab

packages/core-typings/src/IMessage/MessageAttachment/MessageAttachmentAction.ts

@@ -19,7 +19,7 @@ type Action = {
 
 export type MessageAttachmentAction = {
 	button_alignment?: 'horizontal' | 'vertical';
-	actions?: Array<Action>;
+	actions: Array<Action>;
 } & MessageAttachmentBase;
 
 export const isActionAttachment = (attachment: MessageAttachmentBase): attachment is MessageAttachmentAction => 'actions' in attachment;