AWS Transfer Family Update: Add support for updating server identity provider type

Author: AWS

.changes/next-release/feature-AWSTransferFamily-4513fe5.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "AWS Transfer Family",
+    "contributor": "",
+    "description": "Add support for updating server identity provider type"
+}