This issue should also be raised in cosmwasm-std repo but when creating a new template with the cosmwasm-std = 2.0 version we get this error:
error: failed to select a version for `k256`.
... required by package `cosmwasm-crypto v2.0.1`
... which satisfies dependency `cosmwasm-crypto = "^2.0.1"` of package `cosmwasm-std v2.0.1`
... which satisfies dependency `cosmwasm-std = "^2.0.1"` of package X
versions that meet the requirements `^0.13.3` are: 0.13.3