azure-functions-core-tools.rb to support 4.x version

Since according to [1] Version 4 is the new default. Would it be possible to switch the `azure-functions-core-tools@4.rb` to `azure-functions-core-tools.rb` so it gets rolled out by default?

[1]  https://learn.microsoft.com/en-us/azure/azure-functions/functions-run-local?tabs=v4%2Clinux%2Ccsharp%2Cportal%2Cbash