💚 Made AppInsights configuration consistent with latest

[jernejk]

Updated Application Insights based on specs:

• https://learn.microsoft.com/en-us/azure/azure-monitor/app/sdk-connection-string?tabs=dotnet5
• https://learn.microsoft.com/en-us/azure/azure-monitor/app/nodejs

Also, updated GitHub environment variables:

[jernejk]

As per my conversation with @bradystroud, the new staging people looks good and we are switching required build to the new ones.