logictest: reset role before doing post-test checks

This makes sure we run the checks with the root user.

Release note: None

Author: rafiss

pkg/sql/logictest/logic.go

@@ -3826,10 +3826,12 @@ func (t *logicTest) validateAfterTestCompletion() error {
 	// txn and second we reset vectorize mode in case it was switched to
 	// `experimental_always`.
 	_, _ = t.db.Exec("ROLLBACK")
-	_, err := t.db.Exec("RESET vectorize")
-	if err != nil {
+	if _, err := t.db.Exec("RESET vectorize"); err != nil {
 		t.Fatal(errors.Wrap(err, "could not reset vectorize mode"))
 	}
+	if _, err := t.db.Exec("RESET ROLE"); err != nil {
+		t.Fatal(errors.Wrap(err, "could not reset role"))
+	}
 
 	validate := func() (string, error) {
 		rows, err := t.db.Query(`SELECT * FROM "".crdb_internal.invalid_objects ORDER BY id`)