[server] fix SQLite patch to ensure TZDatetime are properly typed
NB: at this point, the TZ info is completely ignored. It will be
properly handled in later commits.
for table, column in [
('transactions', 'tx_time'),
('tx_entity_actions', 'tx_uuid'),
('tx_relation_actions', 'tx_uuid')]:
repo.system_source.create_index(session, table, column)
commit()