Update changelog based on model updates

Author: aws-sdk-python-automation

.changes/next-release/api-change-eks-47918.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``eks``",
+  "description": "Adding support for local Amazon EKS clusters on Outposts"
+}