Update dependency com.github.ajalt:clikt to v2.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
com.github.ajalt:clikt (source)	minor	2.2.0 -> 2.3.0

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Release Notes

ajalt/clikt

### [`v2.3.0`](https://togithub.com/ajalt/clikt/blob/master/CHANGELOG.md#​230---2019-11-07) [Compare Source](https://togithub.com/ajalt/clikt/compare/2.2.0...2.3.0) ##### Added - `option().groupSwitch()`, which works like `groupChoice()`, but uses a `switch()` option rather than a `choice()` option. - `UsageError` now has a `statusCode` parameter (which defaults to 1). If you're using `ClicktCommand.main`, the value of `statusCode` will be passed to `exitProcess`. ##### Changed - Shell completion code is now printed by throwing a `PrintCompletionMessage` (a subclass of `PrintMessage`) rather than calling `echo` directly.

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