Add changelog entries from botocore

Author: aws-sdk-python-automation

.changes/next-release/api-change-ecs-85646.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``ecs``",
+  "description": "[``botocore``] The release addresses Amazon ECS documentation tickets."
+}

.changes/next-release/api-change-sagemaker-25227.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``sagemaker``",
+  "description": "[``botocore``] Added support for ml.trn1.32xlarge instance type in Reserved Capacity Offering"
+}