When switching from v1.4.5 to v1.4.6 or above: "cannot find encode plan" on timestampz

## Description

When upgrading from `gorm.io/driver/postgres v1.4.4` or `gorm.io/driver/postgres v1.4.5`
to `gorm.io/driver/postgres v1.4.6` or greater versions (still failling with `v1.5.7`)

I receive the message when I attempt to do a creation :
`unable to encode util.DateTime{wall:0x7a1200, ext:63843952170, loc:(*time.Location)(nil)} into binary format for timestamptz (OID 1184): cannot find encode plan`

with `util.DateTime` a

```
package util
type DateTime time.Time
```

The only thing I see changing from `v1.4.5` to `v1.4.6` is the incoming of
`github.com/jackc/pgx/v5 v5.2.0` by a `go mod tidy` in place of the `github.com/jackc/pgx/v4` that was used before.
I don't know if it's related.

## Link

It seems that other users encounter the same kind of problem, with a timestamp too, with another OID 1185 instead of 1184 for me:

[[Inserting Array of Time in Postgres via Gorm](https://stackoverflow.com/questions/75043520/inserting-array-of-time-in-postgres-via-gorm)](https://stackoverflow.com/questions/75043520/inserting-array-of-time-in-postgres-via-gorm)