added iam3 to services_beta.kt. previous commit didnt pick up this change.

Author: derekchu-google

mmv1/third_party/terraform/.teamcity/components/inputs/services_beta.kt

@@ -441,6 +441,11 @@ var ServicesListBeta = mapOf(
         "displayName" to "Iam2",
         "path" to "./google-beta/services/iam2"
     ),
+    "iam3" to mapOf(
+        "name" to "iam3",
+        "displayName" to "Iam3",
+        "path" to "./google-beta/services/iam3"
+    ),
     "iambeta" to mapOf(
         "name" to "iambeta",
         "displayName" to "Iambeta",