Update Changelog to indicate removal of associatedObjects field (#1542)

CHANGELOG.md

@@ -136,6 +136,7 @@ Breaking changes that arose during code generation of the library that we postpo
 - ⚠️ Removed deprecated `Amount`, `Currency`, `Description`, `Images`, `Name` properties from `SessionCreateParams.LineItem` (#1473)
 - ⚠️ Remove support for `tos_shown_and_accepted` on `CheckoutSessionCreateParams.payment_method_options.paynow` (#1473)
 - ⚠️ Removed deprecated `Sku` resource (#1459)
+- ⚠️ Removed deprecated `EphemeralKey.associatedObjects` field. ([#1470](https://github.com/stripe/stripe-java/pull/1470))
 - ⚠️ Removed `RequestOptions.getStripeVersionOverride`, `RequestOptions.setStripeVersionOverride`,  and `RequestOptions.clearStripeVersionOverride` (#1464)
 
 Use of `setStripeVersionOverride` is discouraged and can lead to unexpected errors during service calls because Java SDK class shapes are not guaranteed to match API responses on arbitrary versions.