Update changelog based on model updates

Author: aws-sdk-python-automation

.changes/next-release/api-change-bedrockagentcorecontrol-55160.json

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+{
+  "type": "api-change",
+  "category": "``bedrock-agentcore-control``",
+  "description": "Adding support for authorizer type AWS_IAM to AgentCore Control Gateway."
+}

.changes/next-release/api-change-licensemanagerusersubscriptions-23397.json

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+{
+  "type": "api-change",
+  "category": "``license-manager-user-subscriptions``",
+  "description": "Released support for IPv6 and dual-stack active directories"
+}

.changes/next-release/api-change-outposts-93161.json

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+{
+  "type": "api-change",
+  "category": "``outposts``",
+  "description": "This release adds the new StartOutpostDecommission API, which starts the decommission process to return Outposts racks or servers."
+}

.changes/next-release/api-change-servicequotas-82419.json

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+{
+  "type": "api-change",
+  "category": "``service-quotas``",
+  "description": "introduces Service Quotas Automatic Management. Users can opt-in to monitoring and managing service quotas, receive notifications when quota usage reaches thresholds, configure notification channels, subscribe to EventBridge events for automation, and view notifications in the AWS Health dashboard."
+}