Prepare for v4.21.1 release (#3457) ### Added - Windows executable releases are now signed. (<https://github.com/pulumi/pulumi-kubernetes/pull/3455>)
Prepare for v4.21.1 release (#3457) ### Added - Windows executable releases are now signed. (<https://github.com/pulumi/pulumi-kubernetes/pull/3455>)