build: update docs and publish scripts (#468)

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Source-Link: googleapis/synthtool@5747555
Source-Link: googleapis/synthtool@bd0deaa

packages/google-cloud-videointelligence/synth.metadata

@@ -19,7 +19,7 @@
  "git": {
  "name": "synthtool",
  "remote": "https://github.com/googleapis/synthtool.git",
- "sha": "94421c47802f56a44c320257b2b4c190dc7d6b68"
+ "sha": "5747555f7620113d9a2078a48f4c047a99d31b3e"
  }
  }
  ],