Update CHANGELOG

Author: zihejia

CHANGELOG.md

@@ -1,5 +1,13 @@
 #
 
+## [v1.5.0](https://github.com/mixpanel/mixpanel-react-native/tree/v1.5.0) (2022-06-24)
+
+### Enhancements
+
+-  bump versions to get millisecond precision for event time property [\#146](https://github.com/mixpanel/mixpanel-react-native/pull/146)
+
+#
+
 ## [v1.4.2](https://github.com/mixpanel/mixpanel-react-native/tree/v1.4.2) (2022-05-21)
 
 ### Enhancements
@@ -208,3 +216,5 @@ Report issues or give us any feedback is appreciated!
 
 
 
+
+