build: track flaky tests for "nightly", add new secrets for tagging (#…

…491)

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/0901f4c4-aa35-478b-ad7f-b996019d3c27/targets

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

Source-Link: googleapis/synthtool@8cf6d28

packages/google-cloud-compute/synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-compute.git",
-        "sha": "add9c2b9691595b4f4366d2dfb2ad268ce0c4917"
+        "sha": "f7f1357ba9e90488fec45ef62c46c7c58bf47bc4"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "05de3e1e14a0b07eab8b474e669164dbd31f81fb"
+        "sha": "8cf6d2834ad14318e64429c3b94f6443ae83daf9"
       }
     }
   ],
@@ -23,7 +23,6 @@
     ".github/ISSUE_TEMPLATE/feature_request.md",
     ".github/ISSUE_TEMPLATE/support_request.md",
     ".github/PULL_REQUEST_TEMPLATE.md",
-    ".github/publish.yml",
     ".github/release-please.yml",
     ".github/workflows/ci.yaml",
     ".kokoro/.gitattributes",