Add changelog entries from botocore

Author: aws-sdk-python-automation

.changes/next-release/api-change-autoscaling-24576.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``autoscaling``",
+  "description": "[``botocore``] EC2 Auto Scaling adds configuration checks and Launch Template validation to Instance Refresh."
+}

.changes/next-release/api-change-lexv2models-67558.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``lexv2-models``",
+  "description": "[``botocore``] Update lexv2-models client to latest version"
+}