chore: update cloud rad kokoro build job (#377)

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/b742586e-df31-4aac-8092-78288e9ea8e7/targets

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

Source-Link: googleapis/synthtool@bd0deaa

packages/google-container/synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-cloud-container.git",
-        "sha": "6abbff2dec06f1c52b6d0afdf38ddd9b0b426c48"
+        "sha": "9216ea88e4d9e58ffff4a8ee3f3aaf1283683146"
       }
     },
     {
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "94421c47802f56a44c320257b2b4c190dc7d6b68"
+        "sha": "bd0deaa1113b588d70449535ab9cbf0f2bd0e72f"
       }
     }
   ],