Bug 26274: (QA follow-up) Fix the order of summary groups
The grouped income/outgoing summaries were not being explicitly
ordered and it appears the default ordering for MySQL 8 is different to
that of MariaDB and previous versions of MySQL and as such was causing
test failures for that version. This patch adds an explicit sort on the
'description' for each debit_type and credit_type grouping.
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>