Bug 27673: remove libyaml-syck-perl, and lower libyaml-libyaml-perl to 0.41 (for u16)

1/ apply patch
2/ build koha package
3/ confirm that libyaml-libyaml-perl package is installed, and
    libyaml-syck-perl is not

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

cpanfile

@@ -129,8 +129,7 @@ requires 'XML::RSS', '1.31';
 requires 'XML::SAX::ParserFactory', '1.01';
 requires 'XML::SAX::Writer', '0.44';
 requires 'XML::Simple', '2.14';
-requires 'YAML::XS', '0.71';
-requires 'YAML::Syck', '0.71';
+requires 'YAML::XS', '0.41';
 recommends 'AnyEvent', '5.0';
 recommends 'AnyEvent::HTTP', '2.13';
 recommends 'Archive::Extract', '0.60';