Upgrade all contracts and packages to cosmwasm-std beta8

[the-frey]

Contracts using multi-test currently fail on cw-std beta8 because all addresses are now required to be normalized/lower case. This should fix that issue.

Specifically this is done by lower-casing the return value of the next_address function in multi-test.

[the-frey]

Question: should this also update contracts to cosmwasm-std beta8 at the same time? That should then confirm the fix works for all contracts that are using multi-test.

[maurolacy]

Question: should this also update contracts to cosmwasm-std beta8 at the same time? That should then confirm the fix works for all contracts that are using multi-test.

Yes, please. Let's transform this into a "upgrade cosmwasm deps" PR, and this fix is part of it.

[the-frey]

@maurolacy cool, will do. Assume I should also increment versions 13.1 -> 13.2?

[webmaster128]

Nice

[ueco-jb]

lgtm
but to be sure - does that address

Addr::unchecked(format!("contract{}", count))

supposed to be without separation?

[webmaster128]

supposed to be without separation?

I think this is a matter of taste. It was Contract #0, Contract #1, … before and is now contract0, contract1, …. Having an address without spaces is a bit closer to reality. Since it is lower case letters followed by digits, it's still readable nicely.

[ueco-jb]

If you put it that way, I'm all in favor.