fix: buf cosmos-sdk version

[robert-zaremba]

Description

Continuation of #1397 (it was merged too early)

We need to find other way, because buf doesn't find past version we need, and the latest ones are not compatible.

• revert fix: disable proto lint #1410

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[gsk967]

LGTM

[toteki]

Confirmed that this one correctly generates the proto files on main branch as well without diffs