Add changelog entries from botocore

.changes/next-release/api-change-cloudformation-14502.json

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+{
+  "type": "api-change",
+  "category": "``cloudformation``",
+  "description": "[``botocore``] CloudFormation IaC generator allows you to scan existing resources in your account and select resources to generate a template for a new or existing CloudFormation stack."
+}

.changes/next-release/api-change-elbv2-33614.json

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+{
+  "type": "api-change",
+  "category": "``elbv2``",
+  "description": "[``botocore``] Update elbv2 client to latest version"
+}

.changes/next-release/api-change-glue-69986.json

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+{
+  "type": "api-change",
+  "category": "``glue``",
+  "description": "[``botocore``] Update page size limits for GetJobRuns and GetTriggers APIs."
+}

.changes/next-release/api-change-ssm-34198.json

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+{
+  "type": "api-change",
+  "category": "``ssm``",
+  "description": "[``botocore``] This release adds an optional Duration parameter to StateManager Associations. This allows customers to specify how long an apply-only-on-cron association execution should run. Once the specified Duration is out all the ongoing cancellable commands or automations are cancelled."
+}