Fix: Java class class java.util.Date (#58)
* Fix: Java class class java.util.Date does not have corresponding schema type.\n\tat org.apache.kafka.connect.json.JsonConverter.convertToJson
When the payload handed over to the sink in the form of a java.util.Map[_, _], and one value in the Map is of java.util.Date the conenctor fails with the exception above.
To fix the issue, the code relies on Jackson to serialise the code.
* Support the Map with Struct as part of the JSON conversion.
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Co-authored-by: stheppi <[email protected]>