test: fix occasional flakiness in new::create_many::single_col::foo

This tests sometimes returns records in a different order. This happened
at least ones with `pg` driver adapter and `query-compiler-wasm`.
Technically the assertion is not correct indeed, the order is not
defined unless there's an explicit `orderBy` clause.

query-engine/connector-test-kit-rs/query-engine-tests/tests/new/create_many.rs

@@ -72,7 +72,7 @@ mod single_col {
         );
 
         insta::assert_snapshot!(
-          run_query!(&runner, "query { findManyTestModel { id }}"),
+          run_query!(&runner, "query { findManyTestModel(orderBy: { id: asc }) { id }}"),
           @r###"{"data":{"findManyTestModel":[{"id":1},{"id":2}]}}"###
         );