Bug 20019: use Modern::Perl in misc perl scripts

Bug 20019: use Modern::Perl in misc perl scripts

Test Plan:
Test Plan:
Check the following files have been updated from
use strict;
use warnings;
to
use Modern::Perl;

services/itemrecorddisplay.pl
suggestion/suggestion.pl
tags/list.pl
tags/review.pl
virtualshelves/sendshelf.pl
help.pl
changelanguage.pl
koha_perl_deps.pl
debian/bd-to-depends
debian/build-git-snapshot
debian/list-deps
docs/CAS/CASProxy/examples/koha_webservice.pl
docs/CAS/CASProxy/examples/proxy_cas.pl
docs/CAS/CASProxy/examples/proxy_cas_callback.pl
docs/CAS/CASProxy/examples/proxy_cas_data.pl

Signed-off-by: Jon Knight <J.P.Knight@lboro.ac.uk>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>