fix(core): update

ts/smartpuppeteer.classes.incognitobrowser.ts

@@ -28,6 +28,7 @@ export class IncognitoBrowser {
    */
   public async stop() {
     this.status = 'stopped';
+    plugins.treeKill(this.browser.process().pid);
     await this.browser.close();
   }
 

ts/smartpuppeteer.plugins.ts

@@ -11,5 +11,6 @@ export { smartdelay, smartenv };
 
 // third party scope
 import puppeteer from 'puppeteer';
+import treeKill from 'tree-kill';
 
-export { puppeteer };
+export { puppeteer, treeKill };