bump siddhi version to 4.0.0-beta
<properties>
<carbon.analytics.version>2.0.161</carbon.analytics.version>
- <siddhi.version>4.0.0-alpha22</siddhi.version>
+ <siddhi.version>4.0.0-beta</siddhi.version>
<!-- Maven plugins -->
<!--Bundle Plugin - Overridden from parent due to a bug in latest version related to capability providers-->
