message: Updated changeset with breaking changes documentation
diff: ---
  Added support for multiple Kafka clusters and multiple consumers per component.
  +Note that this introduces several breaking changes.
  +
  +1. Configuration in `app-config.yaml` has changed to support the ability to configure multiple clusters. This means you are required to update the configs in the following way:
  +
  +```diff
  +kafka:
  + clientId: backstage
  +- brokers:
  +- - localhost:9092
  ++ clusters:
  ++ - name: prod
  ++ brokers:
  ++ - localhost:9092
  +```
  +
  +2. Configuration of services has changed as well to support multiple clusters:
  +
  +```diff
  + annotations:
  +- kafka.apache.org/consumer-groups: consumer
  ++ kafka.apache.org/consumer-groups: prod/consumer
  +```
  +
  +3. Kafka Backend API has changed, so querying offsets of a consumer group is now done with the following query path:
  + `/consumers/${clusterId}/${consumerGroup}/offsets`
  