fix(SignalAction): Rename action to signal

src/parser/classes/actions/SignalAction.ts

@@ -4,10 +4,10 @@ import type { RawNode } from '../../index.js';
 export default class SignalAction extends YTNode {
   static type = 'SignalAction';
 
-  public action: string;
+  public signal: string;
 
   constructor(data: RawNode) {
     super();
-    this.action = data.action;
+    this.signal = data.signal;
   }
 }