Increased idle shutdown time from 30 to 60 minutes

README.md

@@ -47,7 +47,7 @@ See the [Vertex AI Quickstart instructions](https://cloud.google.com/vertex-ai/d
 4. Go to Vertex AI Workbench and create a new instance using "CREATE NEW" -> "ADVANCED OPTIONS" and use the following configurations:
    * Details:<br/>&emsp;Region: us-east4<br/>&emsp;Zone: us-east4-a<br/>&emsp;Workbench type:<br/>&emsp;&emsp;Type: Instance
    * Environment:<br/>&emsp;JupyterLab Version: JupyterLab 4.x
-   * Machine type:<br/>&emsp;Series: N2<br/>&emsp;Machine type: n2-standard-4<br/>&emsp;Idle shutdown:<br/>&emsp;&emsp;Enable Idle Shutdown: Checked<br/>&emsp;&emsp;Time of inactivity before shutdown (Minutes): 30
+   * Machine type:<br/>&emsp;Series: N2<br/>&emsp;Machine type: n2-standard-4<br/>&emsp;Idle shutdown:<br/>&emsp;&emsp;Enable Idle Shutdown: Checked<br/>&emsp;&emsp;Time of inactivity before shutdown (Minutes): 60
    * Disks: Use default settings
    * Networking:<br/>&emsp;Assign external IP address: Checked<br/>&emsp;Allow proxy access: Checked
    * IAM and security<br/>&emsp;Security options:<br/>&emsp;&emsp;Root access to the instance: Checked<br/>&emsp;&emsp;File downloading: Checked<br/>&emsp;&emsp;Terminal access: Checked