AWSMarketplace Metering Update: Add support for Marketplace Metering Service dual-stack endpoints.

Author: AWS

.changes/next-release/feature-AWSMarketplaceMetering-5f23153.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "AWSMarketplace Metering",
+    "contributor": "",
+    "description": "Add support for Marketplace Metering Service dual-stack endpoints."
+}