Prepared merge request with new version of picocli package

[Miroslav Kravec <kravec.miroslav@gmail.com>]

Dear Java Maintainers,

I've prepared new merge request containing new upstream release and
fixed debian files to make build work with new upstream release.

    https://salsa.debian.org/java-team/picocli/merge_requests/1

Could you take a look at it?

Kind regards,
Miroslav Kravec