Publish to ghcr

Version updated for e621ng/publish-to-ghcr to version v1.0.4.

• This action is used across all versions by 2 repositories.

Go to the GitHub Marketplace to find the latest changes.

Release notes

Full Changelog: https://github.com/e621ng/publish-to-ghcr/compare/v1.0.3...v1.0.4

• e621ng
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