Cosmwasm 2.0 upgrade

[Buckram123]

Upgrading packages to use cosmwasm 2.0 is a requirement for integrated projects to upgrade. It includes upgrading such packages:

• cosmwasm-* v2.0+ (for example: cosmwasm-schema, cosmwasm-std)
• cw* v2.0+ (for example: cw-storage-plus, cw-utils, cw2, cw20)