Ignoring invalid configuration option passed to Connection: driver

Hi,

Can't figure out why i'm getting this msg when running `pnpm db-migrate up`:
`Ignoring invalid configuration option passed to Connection: driver`

My `database.json` is:
```
{
"dev": {
"driver": "mysql",
"host": "localhost",
"port": "3306",
"user": "root",
"password": "",
"database": "graphql-mysql-test"
}
}
```

migration js is genereated with `pnpm db-migrate create user `:
```
...
exports.up = function(db, callback) {
db.createTable('user', {
id: {
type: 'int',
primaryKey: true
},
full_name: {
type: 'string',
length: 40
},
dob: {
type: 'date'
},
email: {
type: 'string',
length: 50
},
}, function(err) {
if (err) return callback(err);
return callback();
});
};
...
```

Versions:
"db-migrate": "^1.0.0-beta.16",
"db-migrate-mysql": "^2.2.0",
node: v14.17.3