Add changelog entries from botocore

Author: aws-sdk-python-automation

.changes/next-release/api-change-computeoptimizer-24489.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``compute-optimizer``",
+  "description": "[``botocore``] Documentation updates for Compute Optimizer"
+}

.changes/next-release/api-change-ec2-17.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``ec2``",
+  "description": "[``botocore``] Added idempotency to the CreateVolume API using the ClientToken request parameter"
+}