AWS AppSync Update: UpdateGraphQLAPI documentation update and datasource introspection secret arn update

Author: AWS

.changes/next-release/feature-AWSAppSync-f646258.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "AWS AppSync",
+    "contributor": "",
+    "description": "UpdateGraphQLAPI documentation update and datasource introspection secret arn update"
+}

services/appsync/src/main/resources/codegen-resources/service-2.json

@@ -5,6 +5,7 @@
     "endpointPrefix":"appsync",
     "jsonVersion":"1.1",
     "protocol":"rest-json",
+    "protocols":["rest-json"],
     "serviceAbbreviation":"AWSAppSync",
     "serviceFullName":"AWS AppSync",
     "serviceId":"AppSync",
@@ -4107,7 +4108,7 @@
       "type":"string",
       "max":2048,
       "min":20,
-      "pattern":"^arn:[a-z-]*:secretsmanager:[a-z0-9-]*:\\d{12}:secret:[0-9A-Za-z_/-]*$"
+      "pattern":"^arn:[a-z-]*:secretsmanager:[a-z0-9-]*:\\d{12}:secret:[0-9A-Za-z_/+=.@!-]*$"
     },
     "RdsHttpEndpointConfig":{
       "type":"structure",
@@ -4869,7 +4870,8 @@
       "type":"structure",
       "required":[
         "apiId",
-        "name"
+        "name",
+        "authenticationType"
       ],
       "members":{
         "apiId":{