Bug 7820: Followup: Add missing Debian packages

Adds DateTime::Set used in Koha/Calendar.pm

Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>

install_misc/debian.packages

@@ -25,6 +25,7 @@ libdatetime-format-strptime-perl	install
 libdatetime-format-w3cdtf-perl	install
 libdatetime-locale-perl	install
 libdatetime-perl	install
+libdatetime-set-perl install
 libdatetime-timezone-perl	install
 libdbd-mysql-perl install
 libdbd-sqlite2-perl install