Update go-containerregistry dependency

[ianberinger]

fixes #245

[container-tools-bot]

Hi @ianberinger. Thanks for your PR.

I'm waiting for a GoogleContainerTools member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[sharifelgamal]

/ok-to-test

[priyawadhwa]

Thanks for fixing this! 🎉

[yurrriq]

Thanks, @ianberinger!