Fix overzealous dep upgrade, changelog
v1.7.7

 [BugFix]
 - Accidentally upgraded dependency on Plugin::Authority to a version that
   is not on CPAN. Solved. Thanks to Sander Lepik for reporting.

 [Dependencies::Changed / develop suggests]
 - Dist::Zilla::PluginBundle::Author::KENTNL v1.7.6 → v1.7.7

 [Dependencies::Changed / runtime requires]
 - Dist::Zilla::Plugin::Authority 1.007 → 1.006