chore: update bucket for cloud-rad (#396)

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Source-Link: googleapis/synthtool@079dcce

packages/google-cloud-iot/synth.metadata

@@ -4,7 +4,7 @@
  "git": {
  "name": ".",
  "remote": "https://github.com/googleapis/nodejs-iot.git",
- "sha": "fe6b2c190c58928e30b102d5bc4ec8a25050852b"
+ "sha": "cd7bf85083bade2f6522d5484fd7635b38344ef6"
  }
  },
  {
@@ -19,7 +19,7 @@
  "git": {
  "name": "synthtool",
  "remote": "https://github.com/googleapis/synthtool.git",
- "sha": "fdd03c161003ab97657cc0218f25c82c89ddf4b6"
+ "sha": "079dcce498117f9570cebe6e6cff254b38ba3860"
  }
  }
  ],