Add changelog entries from botocore

Author: aws-sdk-python-automation

.changes/next-release/api-change-cloudformation-57333.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``cloudformation``",
+  "description": "[``botocore``] This SDK release is for the feature launch of AWS CloudFormation Hooks."
+}