Topic/bump prereqs

This saves my pluginbundle from having to inject a test prereq on CPAN::Meta::Check 0.007 - which is problematic for dists where I remove [Test::CheckDeps] (e.g. toolchain things where non-core prereqs are being avoided).

alternatively, the plugin itself could inject a direct dependency (although it's not a MetaProvider right now, so that adds extra complication).