examples neo-go outdated dependencies make tests useless

[AliceInHunterland]

Is your feature request related to a problem? Please describe.

We didn't catch this #3802 bug earlier because

neo-go/examples/zkp/cubic_circuit/go.mod

Line 8 in f09a04d

github.com/nspcc-dev/neo-go v0.106.3

neo-go dependency wasn't updated with the new release.

Describe the solution you'd like

Update examples dependency automatically. Something like:

cd "$root"/examples/zkp/cubic_circuit || exit 1
go get -u github.com/nspcc-dev/neo-go
go mod tidy

cd "$root"/examples/nft-nd-nns || exit 1
go get -u github.com/nspcc-dev/neo-go
go mod tidy

But update_deps.sh isn't the perfect place for it as it updates only interop dependencies. Maybe dependabot?

Describe alternatives you've considered

Remember about it and update it every time manually.