Adds changelog entry for mrap

Author: cenedhryn

.changes/next-release/feature-AmazonS3-155bd4c.json

@@ -0,0 +1,6 @@
+{
+    "category": "Amazon S3", 
+    "contributor": "", 
+    "type": "feature", 
+    "description": "Adds multi-region support for S3 access points as well as Sigv4 Asymmetric signing"
+}