Update changelog based on model updates

Author: aws-sdk-python-automation

.changes/next-release/api-change-ec2-863.json

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+{
+  "type": "api-change",
+  "category": "``ec2``",
+  "description": "Documentation updates for EC2 On Demand Capacity Reservations"
+}

.changes/next-release/api-change-internetmonitor-84121.json

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+{
+  "type": "api-change",
+  "category": "``internetmonitor``",
+  "description": "This release adds a new feature for Amazon CloudWatch Internet Monitor that enables customers to deliver internet measurements to Amazon S3 buckets as well as CloudWatch Logs."
+}

.changes/next-release/api-change-resiliencehub-50413.json

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+{
+  "type": "api-change",
+  "category": "``resiliencehub``",
+  "description": "Adding EKS related documentation for appTemplateBody"
+}

.changes/next-release/api-change-s3-75975.json

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+{
+  "type": "api-change",
+  "category": "``s3``",
+  "description": "Documentation updates for Amazon S3"
+}

.changes/next-release/api-change-sagemakerfeaturestoreruntime-75387.json

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+{
+  "type": "api-change",
+  "category": "``sagemaker-featurestore-runtime``",
+  "description": "In this release, you can now chose between soft delete and hard delete when calling the DeleteRecord API, so you have more flexibility when it comes to managing online store data."
+}

.changes/next-release/api-change-sms-28003.json

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+{
+  "type": "api-change",
+  "category": "``sms``",
+  "description": "Deprecating AWS Server Migration Service."
+}