[Action recommended]: Update Azure Functions apps to use runtime version 4.x

[onobc]

This is an internal housekeeping ticket for us to update any sample Azure function apps to the latest runtime by December 2022.

It is not critical but a good thing to do.

Update your Azure Functions apps to use runtime version 4.x before 3 December 2022
You're receiving this email because you have Azure Functions apps that use runtime version 2.x or 3.x.

On 3 December 2022, .NET Core 3.1 will be retired. As a result, Azure Functions runtime versions 2.x and 3.x, which use .NET Core 3.1, will also be retired on that date.

Your Functions applications that use runtime version 2.x or 3.x will continue to run and your existing workloads won't be affected. However, we'll no longer provide updates or customer service for applications that use these versions.

Functions runtime version 4.x includes:

The latest security updates.
Support for the latest programming languages such as .NET 6 and Node 16.

https://docs.microsoft.com/en-us/azure/azure-functions/set-runtime-version?tabs=portal#view-and-update-the-current-runtime-version