title: Override schemas.enable in kafka-connect connector
body: <p>I have a distributed Kafka Connect (6.x) cluster with multiple connectors installed. Key and value converters are set to <code>org.apache.kafka.connect.json.JsonConverter</code>. For one of the connectors (an S3 Sink) I need to consume events without a schema, so the schemas.enable properties are set to false in the cluster configs: <code>key.converter.schemas.enable=False</code>, <code>value.converter.schemas.enable=False</code>. For others (Debezium MySql source connectors) I need to add the schema in the event, so the properties should be true.</p>
  <p>I know that <a href="https://docs.confluent.io/platform/current/connect/references/allconfigs.html#override-the-worker-configuration" rel="nofollow noreferrer">it's possible to override configs in the connectors</a>, but apparently this only works for <code>producer.</code> and <code>consumer.</code> configs. I tried overriding <code>producer.key.converter.schemas.enable</code> in the source connectors, but it doesn't seem to have effect.</p>
  <p>Is there a way to achieve this within a single Kafka Connect cluster?</p>