Add authordeps for xt/author/ tests

Author: zmughal

dist.ini

@@ -41,7 +41,12 @@ GatherDir.exclude_match[3]   = notebook/ImageNetLabels.txt
 ; authordep Pod::Elemental::Transformer::List
 ; authordep Pod::Weaver::Section::AllowOverride
 [RunExtraTests]
+;; For xt/author/pod-linkcheck.t
 ; authordep Test::Pod::LinkCheck::Lite
+;; For xt/author/pod-snippets.t
+; authordep Test::Pod::Snippets
+; authordep Pod::Simple::Search
+; authordep With::Roles
 
 [Test::Perl::Critic]
 ; authordep Perl::Critic::Community