fix: gracefully handle missing GCP_CREDENTIALS in dump-ci-stats script

[Copilot]

The Dump GH CI Stats workflow was repeatedly failing on master because GCP_CREDENTIALS is not configured as a secret in this repo, causing JSON.parse('') to throw SyntaxError: Unexpected end of JSON input at startup.

Changes

• .github/actions/dump-ci-stats-to-gcp-metrics.cjs: Added an early-exit guard before the JSON.parse call — if GCP_CREDENTIALS is absent or blank, the script logs a message and exits cleanly with code 0.

if (!process.env.GCP_CREDENTIALS || process.env.GCP_CREDENTIALS.trim() === '') {
  console.log('GCP_CREDENTIALS not set, skipping metrics upload.');
  process.exit(0);
}

Original prompt

The Copilot coding agent is already working on fixing all failing jobs in your repository (Snapp949/agoric-sdk). Once the agent has analyzed the failures and prepared the pull request, you’ll be able to review, test, and merge the changes.

If you want to manually re-run workflows, you can do so in GitHub’s Actions tab by selecting the workflow and clicking “Re-run jobs.”

Would you like instructions for manually re-running workflows, or do you want to wait for the Copilot agent’s fixes?

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✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[Snapp949]

Ty