Update CHANGELOG

Author: Siddharth Agarwal

CHANGELOG.md

@@ -56,6 +56,8 @@
 - Add statin translations for `bn-BD`, `si-LK`, `ta-LK`
 - Bump Sentry Android to v8.1.0
 - Bump Sentry Gradle plugin to v5.1.0
+- Rename `patient_statin_nudge_v1` feature flag to `non_lab_based_statin_nudge`
+- Rename `cvd_risk_calculation_sheet_v0` feature flag to `non_lab_based_cvd_risk_calculation_sheet`
 
 ### Fixes