Add changelog entries from botocore

Author: aws-sdk-python-automation

.changes/next-release/api-change-amplifybackend-93273.json

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+{
+  "type": "api-change",
+  "category": "``amplifybackend``",
+  "description": "[``botocore``] Adding a new field 'AmplifyFeatureFlags' to the response of the GetBackend operation. It will return a stringified version of the cli.json file for the given Amplify project."
+}

.changes/next-release/api-change-fsx-11901.json

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+{
+  "type": "api-change",
+  "category": "``fsx``",
+  "description": "[``botocore``] This release adds support for Lustre 2.12 to FSx for Lustre."
+}

.changes/next-release/api-change-kendra-93692.json

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+{
+  "type": "api-change",
+  "category": "``kendra``",
+  "description": "[``botocore``] Amazon Kendra now supports integration with AWS SSO"
+}

.changes/next-release/api-change-sagemaker-37113.json

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+{
+  "type": "api-change",
+  "category": "``sagemaker``",
+  "description": "[``botocore``] This release adds a new TrainingInputMode FastFile for SageMaker Training APIs."
+}