Bug 7567 - Schema update for opac_news

Bug 7567 - Schema update for opac_news

This was generated by:
Reset hard to master.
Restore old DB
Apply the patches for 7567
./installer/data/mysql/updatedatabase.pl
./misc/devel/update_dbix_class_files.pl -db_name=... -db_user=... -db_passwd=...
git add Koha/Schema/Results/OpacNews.pm

This should provide the necessary changes to the schema files for
Koha 3.16 and forward.

Had to generate under Debian, because Ubuntu's was broken by comparison.

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>