Added warning about previous discrepancy in pricePer{Period} APIs to changelog (#1577)

Author: rickvdl

CHANGELOG.md

@@ -1,4 +1,8 @@
 ## 9.7.6
+> [!WARNING]
+> In previous versions of the SDK, there was a discrepancy in the `pricePer{week/month/year}` StoreProduct APIs between platforms. On iOS, the value was expressed as a decimal number, while on Android it was expressed in micros. As of this release, this discrepancy has been fixed and both platforms now return the value as a decimal number.
+
+
 ## RevenueCat SDK
 ### 🐞 Bugfixes
 * Handle missing log handler when reloading (#1573) via Toni Rico (@tonidero)