build: update docs and publish scripts (#468)

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/4895db2c-aba9-406e-b81d-1e2251ee464c/targets

- [ ] To automatically regenerate this PR, check this box.

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"
       }
     }
   ],