Move Application Insights to Workspace based

[msftnadavbh]

The lab uses a Classic Application Insights resource,
-> https://github.com/Azure/kubernetes-hackfest/blob/master/labs/build-application/README.md

After deployment Azure Portal notifies the user that it will be deprecated :

Classic Application Insights is deprecated and will be retired in February 2024.
Migrate this resource to Workspace-based Application Insights to gain support for all of the capabilities of Log Analytics, including Customer-Managed Keys and Commitment Tiers. Click here to learn more and migrate in a few clicks.