Update resource list

Author: Autogenerator Pipeline

generator/resources.json

@@ -2963,7 +2963,8 @@
     "2020-08-15-preview",
     "2021-01-28-preview",
     "2021-03-25-preview",
-    "2021-04-22-preview"
+    "2021-04-22-preview",
+    "2021-05-20"
   ],
   "Microsoft.HybridCompute/machines/extensions": [
     "2019-08-02-preview",
@@ -2973,19 +2974,22 @@
     "2020-08-15-preview",
     "2021-01-28-preview",
     "2021-03-25-preview",
-    "2021-04-22-preview"
+    "2021-04-22-preview",
+    "2021-05-20"
   ],
   "Microsoft.HybridCompute/privateLinkScopes": [
     "2020-08-15-preview",
     "2021-01-28-preview",
     "2021-03-25-preview",
-    "2021-04-22-preview"
+    "2021-04-22-preview",
+    "2021-05-20"
   ],
   "Microsoft.HybridCompute/privateLinkScopes/privateEndpointConnections": [
     "2020-08-15-preview",
     "2021-01-28-preview",
     "2021-03-25-preview",
-    "2021-04-22-preview"
+    "2021-04-22-preview",
+    "2021-05-20"
   ],
   "Microsoft.HybridCompute/privateLinkScopes/scopedResources": [
     "2020-08-15-preview"