Created after discussion on #338

We use the latest stable tag for the Debezium Kafka Connect image in our integration tests. Currently, that tag is 2.3.0.Final, which is built with Kafka Connect 3.4. That version of Kafka Connect doesn't support the GET /connectors/{name}/offsets or PUT /connectors/{name}/stop endpoints, so we use a different, unstable tag in the tests for the get offsets and stop connector commands that corresponds to an image built with Kafka Connect 3.5.

Once Debezium publishes a stable image built off of Kafka Connect 3.5, we can and should remove that override from those tests.