Workaround: Sticked version of Test::PerlTidy

Test-PerlTidy 20190305.001 requires later version of Perl::Tidy which may break the past formatting.  As a workaround, force sticked version of Test::PerlTidy.

cpanfile

@@ -288,7 +288,7 @@ feature 'Unicode::Normalize', 'Normalizes file names represented by Unicode.' =>
 
 on 'develop' => sub {
     requires 'Test::Fixme';
-    requires 'Test::PerlTidy';
+    requires 'Test::PerlTidy', '== 20190305';
     requires 'Perl::Tidy', '== 20180220';
     requires 'Code::TidyAll';
 };