Update supported Runtimes

[wilsenhc]

This PR updates the list of supported runtimes to the current supported runtimes listed in the Lambda runtimes docs page.

This PR also updates the default runtime for Lambda Functions to be latest Node.js LTS version.

Last but not least, this PR also updated the docs to be consistent with the list of Lambda Runtimes

[wilsenhc]

Sorry to bother, just a quick ping/reminder @aarondfrancis

[aarondfrancis]

Can we leave the default runtime as 14, and then it's not a breaking change? We'll have to do it eventually, but I'd rather wait as long as possible

[wilsenhc]

@aarondfrancis We could leave the default value in the LambdaFunction class to be Node.js v14 but recommend/give examples in the documentation to use the latest Node.js LTS version?

Also now that I think of it, adding a make:lambda-function command is something that would make sense?
And in there you could "enforce" newer versions of the runtime just by using a stub file that would only be used to create new functions without affecting existing ones?

[wilsenhc]

@aarondfrancis

Also, just to add a note here: according to Node.js releases cycle Node.js v14 is already unsupported so it may not be long before AWS stops supporting it as a Lambda Runtime too.

[wilsenhc]

@aarondfrancis I've udated the title of this PR to reflect that this is not a breaking change anymore!

[wilsenhc]

I've just updated this PR since AWS added support for Python 3.11 just a few days ago.

@aarondfrancis

[wilsenhc]

@aarondfrancis
I have just updated this PR to add support for the nodejs20.x runtime that was recently added to AWS Lambda. Changelog here.

[mt-dev44]

@aarondfrancis - Any thoughts on when this might get merged in?

[owenvoke]

It would be great to add this as Node.js 14.x is now deprecated and cannot be used to create new Lambda functions.

[wilsenhc]

I have updated this PR with your suggested changes @owenvoke

cc @aarondfrancis

[wilsenhc]

At this point this PR has been open for 7 months, so I am not sure if this package has been abandoned or not.

cc'ing everyone that has participated in this @mt-dev44 @owenvoke @aarondfrancis

[aarondfrancis]

Sorry, been a while. Had a lot going on. I'll merge and tag

[aarondfrancis]

Thanks for your patience @wilsenhc et al. Tagged a new release. I'll work through the backlog of other ones in the next few days