Add changelog entries from botocore

.changes/next-release/api-change-globalaccelerator-65131.json

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+{
+  "type": "api-change",
+  "category": "``globalaccelerator``",
+  "description": "[``botocore``] This release contains a new optional ip-addresses input field for the update accelerator and update custom routing accelerator apis. This input enables consumers to replace IPv4 addresses on existing accelerators with addresses provided in the input."
+}

.changes/next-release/api-change-glue-72905.json

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+{
+  "type": "api-change",
+  "category": "``glue``",
+  "description": "[``botocore``] AWS Glue now supports native SaaS connectivity: Salesforce connector available now"
+}

.changes/next-release/api-change-s3-89526.json

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+{
+  "type": "api-change",
+  "category": "``s3``",
+  "description": "[``botocore``] Added new params copySource and key to copyObject API for supporting S3 Access Grants plugin. These changes will not change any of the existing S3 API functionality."
+}