Add changelog entries from botocore

Author: aws-sdk-python-automation

.changes/next-release/api-change-backup-73799.json

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+{
+  "type": "api-change",
+  "category": "``backup``",
+  "description": "[``botocore``] AWS Backup SDK provides new options when scheduling backups: select supported services and resources that are assigned to a particular tag, linked to a combination of tags, or can be identified by a partial tag value, and exclude resources from their assignments."
+}

.changes/next-release/api-change-ecs-33846.json

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+{
+  "type": "api-change",
+  "category": "``ecs``",
+  "description": "[``botocore``] This release adds support for container instance health."
+}

.changes/next-release/api-change-resiliencehub-27786.json

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+{
+  "type": "api-change",
+  "category": "``resiliencehub``",
+  "description": "[``botocore``] Initial release of AWS Resilience Hub, a managed service that enables you to define, validate, and track the resilience of your applications on AWS"
+}