We lose the more normal looking export in favor of the `return` statement already traditional to this action, and thus can handle await statements without an ESM conversion.
This is a separate commit from the former because I think the next major version of this action should switch to ESM, revert this commit, and use the more standard export notation in all supported languages.
We are exposing the async-function argument type for jsDoc
type declaration support. This means that we now could do:
"npm i -D @types/github-script@github:actions/github-script"
and the add:
"@param {import('@types/github-script').AsyncFunctionArguments}
AsyncFunctionArguments".
This could obviously be done in other ways too, like using
"@typed-actions/github-script" instead. But it seems better
to use the actual source repository instead of a third-party
library to import the type declaration.
