Adjusting changelog

Author: cwilson21

CHANGELOG.md

@@ -4,6 +4,7 @@
 * Switch st2 to `v3.7` as a new default stable version (#274)
 * Upgrade MongoDB `v4.0` -> `v4.4` as 4.0 has reached its EOL. (#304)
 * Migrate from `python 3.6` `Ubuntu Bionic` to `python 3.8` `Ubuntu Focal` as a base StackStorm OS (StackStorm/st2-dockerfiles#54)
+* Add support for use of overrides that are available in `v3.7` of st2 via helm charts. (#306)
 
 ## v0.90.0
 * Advanced Feature: Make securityContext (on Deployments/Jobs) and podSecurityContext (on Pods) configurable. This allows dropping all capabilities, for example. You can override the securityContext for `st2actionrunner`, `st2sensorcontainer`, and `st2client` if your actions or sensors need, for example, additional capabilites that the rest of StackStorm does not need. (#271) (by @cognifloyd)