Error in generateMigration when change varchar to jsonb

## Description

Reproduction is in https://github.com/SimYunSup/example-list/tree/drizzle-kit/jsonb-error

When Changing `varchar()` to `jsonb()`, `generateMigration` generate like below.

```sql
ALTER TABLE "tests" ALTER COLUMN "json" SET DATA TYPE jsonb;
```

It generate migration error as `Token "json" is invalid.`.

So I think it must be like below.

```sql
ALTER TABLE "tests" ALTER COLUMN "json" SET DATA TYPE jsonb USING to_jsonb("json");
```

Related in [payloadcms/payload#6633](https://github.com/payloadcms/payload/issues/6633)