Only use Lexical::SealRequireHints before perl 5.12

It doesn't do anything on newer perls, but is failing its tests on
5.27.11.

1 files changed, 1 insertions, 0 deletions

diff --git a/Changes b/Changes
index f5f11c1..acaf6ea 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,7 @@
 Revision history for bareword::filehandles
 
 {{$NEXT}}
+ - Only depend on Lexical::SealRequireHints before 5.12
 
 0.005     2017-04-20 16:27:24+01:00 Europe/London
  - Switch to Dist::Zilla::PluginBundle::Starter