syncpack was failing without logs

[sofisl]

originally, the intent behind using syncpack was to make sure our dependencies were compatible. but it's been failing on all of our PRs without any logs, and it's difficult to recreate locally (example): https://github.com/googleapis/google-cloud-node-core/actions/runs/22781070422/job/66086734223?pr=920

I think right now it's doing more harm than good but so I'm going to delete it. but, i still think we should come up with some replacement to make sure our dependencies are in sync.

[JamieMason]

Hey, there were breaking changes in v14 that would need making: https://syncpack.dev/guide/migrate-v14/.

I expected some helpful output that mentions you're running a deprecated command though, FWIW I'll look into what the problem is there, it is supposed to offer some help info.

EDIT: PR raised at fix: use compatible syncpack configuration

[sofisl]

Thank you @JamieMason! will take a look!