fix for make proto-all

[crodriguezvega]

Description

I think this fixes make proto-all. The culprits were:

• the buf.lock file
• the deps section in buf.yaml
• the missing scalar field option in cosmos.proto

Besides that I removed confio/proofs.proto (see #583) and updated auth.proto with latest from here.

closes: #XXXX

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[faddat]

Thanks, I am merging this, and fixing update-deps, which I think moves the confio proofs proto to the wrong place.