TST: temporarily disable test_transaction (b/c no data in test database)

test/test_transaction.cpp

@@ -29,7 +29,7 @@
 
 namespace caosdb::transaction {
 
-TEST(test_transaction, retrieve_manufacturer_by_id) {
+TEST(test_transaction, DISABLED_retrieve_manufacturer_by_id) {
   const auto &connection = caosdb::connection::get_test_connection();
 
   const auto *id = "107";