Fix gitlab-resize-image bin installation

This expected to fix ImageResizer: failed forking into scaler process: exec: "gitlab-resize-image": executable file not found in $PATH errors which appear on staging/prod, but not locally/in CI.

I assume no changes need to be made in CNG/Omnibus to pick this binary up, looking at the similar ones we already have (e.g. gitlab-zip-cat).

Thanks to @nick for finding the issue! 🙇