Mark as public Github Container Registry

[sters]

WHAT

I introduced publishing container image to GHCR in this PR: #111

And the result seems fine. Github actions said it's published.
https://github.com/cloudspannerecosystem/wrench/actions/runs/10213036102/job/28257623430

But the image of ghcr.io/cloudspannerecosystem/wrench is still 404.
I think it's marked as private so please change it to public.

WHY

I wanted to use wrench from the official docker image.

related: #82

[zoncoen]

Thank you for your feedback. I tried to make it public, but it requires the org admin permission.
I'll contact to admin. 🙏

[yfuruyama]

@skuruppu Hi Shanika, I was asked to make this change, but I noticed that I'm no longer the owner of this organization. Could you make this repo's container registry public?

Probably we can change it from here: https://github.com/cloudspannerecosystem/wrench/pkgs/container/wrench

[skuruppu]

Sorry for the delay. The package is public now public.

[yfuruyama]

Thank you @skuruppu !

[zoncoen]

It works! Thank you 🙌

[sters]

I can see the image. Thank you!
https://github.com/cloudspannerecosystem/wrench/pkgs/container/wrench