Fix miss makezero bug

[alingse]

Description

When I was adding features for linter makezero, I ran some GitHub Actions for some repos on GitHub, and it reported an error in this project.

Testing & Reproduction steps

Links

see https://github.com/hashicorp/packer-plugin-googlecompute/pull/218 and

PR Checklist

• [ ] updated test coverage
• [ ] external facing docs updated
• [ ] appropriate backport labels added
• [x] not a security concern

[github-actions[bot]]

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