add Kafka Version support to Changelog
- Metrics APIServer: Add ratelimiting parameters to override client ([#1944](https://github.com/kedacore/keda/pull/1944))
- Optimize KafkaScaler by fetching all topic offsets using a single HTTP request ([#1956](https://github.com/kedacore/keda/pull/1956))
- Adjusts InfluxDB scaler to support queries that return integers in addition to those that return floats ([#1977](https://github.com/kedacore/keda/pull/1977))
+- Adding ability to specify Kafka Broker Version ([#1866](https://github.com/kedacore/keda/pull/1866))
### Breaking Changes
