[Perl/perl5] 9cc5c4: Update Scalar-List-Utils to 1.56

[Max Maischein via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 9cc5c436f846b78979eaa14aa6678db1270f7a46
      
https://github.com/Perl/perl5/commit/9cc5c436f846b78979eaa14aa6678db1270f7a46
  Author: Max Maischein <cor...@corion.net>
  Date:   2021-05-22 (Sat, 22 May 2021)

  Changed paths:
    M MANIFEST
    M Porting/Maintainers.pl
    M cpan/Scalar-List-Utils/ListUtil.xs
    M cpan/Scalar-List-Utils/lib/List/Util.pm
    M cpan/Scalar-List-Utils/lib/List/Util/XS.pm
    M cpan/Scalar-List-Utils/lib/Scalar/Util.pm
    M cpan/Scalar-List-Utils/lib/Sub/Util.pm
    A cpan/Scalar-List-Utils/t/mesh.t
    M cpan/Scalar-List-Utils/t/uniq.t
    M cpan/Scalar-List-Utils/t/uniqnum.t
    A cpan/Scalar-List-Utils/t/zip.t

  Log Message:
  -----------
  Update Scalar-List-Utils to 1.56