RF: Increase the dataset size of dev-check test

Closes #321
diff --git a/src/ports/postgres/modules/recursive_partitioning/test/random_forest.sql_in b/src/ports/postgres/modules/recursive_partitioning/test/random_forest.sql_in
index 0dad625..5dfd318 100644
--- a/src/ports/postgres/modules/recursive_partitioning/test/random_forest.sql_in
+++ b/src/ports/postgres/modules/recursive_partitioning/test/random_forest.sql_in
@@ -285,7 +285,17 @@
 (2,1,2,2,4,2),
 (3,1,3,3,3,1),
 (4,2,4,4,2,2),
-(5,2,5,4,1,1);
+(5,2,5,4,1,1),
+(6,1,1,1,5,1),
+(7,1,2,2,4,2),
+(8,1,3,3,3,1),
+(9,2,4,4,2,2),
+(10,2,5,4,1,1),
+(11,1,1,1,5,1),
+(12,1,2,2,4,2),
+(13,1,3,3,3,1),
+(14,2,4,4,2,2),
+(15,2,5,4,1,1);
 
 DROP TABLE IF EXISTS train_output, train_output_summary, train_output_group;
 SELECT forest_train(