Improve version-pinning

Change-Id: I6df3e0026726d2bf6792fc07aeb7bb3b464b2e13
diff --git a/script/korapxml2krill b/script/korapxml2krill
index cacbe39..447b6c4 100755
--- a/script/korapxml2krill
+++ b/script/korapxml2krill
@@ -1,7 +1,7 @@
 #!/usr/bin/env perl
 use strict;
 use warnings;
-use v5.10;
+use v5.32;
 use FindBin;
 BEGIN { unshift @INC, "$FindBin::Bin/../lib" };
 use File::Spec::Functions qw/catfile catdir/;