Adjust drizzle init for changes in drizzle 0.35.0
https://github.com/drizzle-team/drizzle-orm/releases/tag/0.35.0
The pool/connection should now be passed as the `client` arg when
initializing drizzle.
```ts
this.drizzle = drizzle({
client: this.poolOptions ? new VercelPool(this.poolOptions) : sql,
logger,
schema: this.schema,
})
```
This was causing an issue where running `payload migrate` on Vercel was
causing drizzle to attempt to `127.0.0.1:5432` instead of the specified
environment variable in the adapter 🤔
9fb86655a9