v1.7.0 SET Invalid Grammar

**Describe the bug**
SET grammar doesn't account for `CHARACTER SET` and breaks when encountering that combination.

**To Reproduce**
```sql
CREATE TABLE `table_notes` (
  `id` int NOT NULL AUTO_INCREMENT,
  `notes` varchar(255) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NOT NULL,
);
```

`set('A', 'B', 'C')` works. Set defaults also works. 