build: adds UNORDERED_LIST enum (#330)

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Source-Link: googleapis/synthtool@57c23fa

Author: yoshi-automation

packages/google-cloud-scheduler/protos/protos.d.ts

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-scheduler.git",
-        "sha": "f92cf9df3acb3a76d17a9bb4a3bd6ed7c501fbcf"
+        "sha": "17d7cb919f52ee1636c7bdff465e7c21eae14f3c"
       }
     },
     {
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "363fe305e9ce34a6cd53951c6ee5f997094b54ee"
+        "sha": "57c23fa5705499a4181095ced81f0ee0933b64f6"
       }
     }
   ],