1 validator set should use 1 major release of golang

[faddat]

Summary of Bug

When validator sets mix go 1.18 and 1.19, bad things seem to happen.

Since some distributions are shipping with go 1.19 and/or people's computers have go1.19, and if we require go 1.19, then validator sets should use it.

Version

any

Steps to Reproduce

have a validator set mix go 1.18 and 1.19 binaries, it seems to lead to apphash errors with the same code.

[tac0turtle]

applications can enforce go versions across the chain. I agree there was an issue with go1.18 -> go1.19 but this is also generally seen as a breaking change for node operators and why we have shied away from it in the past

[faddat]

This is why I'm offering guidance; really want to make an sdk user guide.

Time is the main issue.

[julienrbrt]

From the SDK perspective what were you thinking of?

I don't think we can do much more that adding an advice in the docs.

A small :::warning https://docs.cosmos.network/main/run-node/run-production here should do it right?

[faddat]

Thanks so much for finishing the job sir