Connector version always reports Kafka Connect version

### Subject of the issue
The connector version is not reported correctly, and is confusing as it does not change when upgrading the connector.
It appears to use the AppInfoParser: https://github.com/adobe/experience-platform-streaming-connect/blob/be9b83b708c97a17f105e45263219b7dfe2d128c/streaming-connect-sink/src/main/java/com/adobe/platform/streaming/sink/AbstractSinkConnector.java#L37 which always reports the Apache Kafka version, not the version of the packaged connector.

### Steps to reproduce
1. Download a release artifact (eg 0.0.16)
2. Download Kafka Connect (eg 3.4.0)
3. Install the connector on the Kafka Connect plugin path and start the service
4. Make a request to `GET /connector-plugins` on the running worker

### Expected behaviour
The version reported for the sink connector is 0.0.16, or not provided.

### Actual behaviour
The version reported for the sink connector is 3.4.0 (or whatever the connect version happens to be).