Add changelog entries from botocore

Author: aws-sdk-python-automation

.changes/next-release/api-change-chimesdkmeetings-86132.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``chime-sdk-meetings``",
+  "description": "[``botocore``] Include additional exceptions types."
+}

.changes/next-release/api-change-ec2-63128.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``ec2``",
+  "description": "[``botocore``] Adds support for waiters that automatically poll for a deleted NAT Gateway until it reaches the deleted state."
+}