Release v0.2.2

What's Changed

• chore(deps): bump google.golang.org/grpc from 1.53.0 to 1.54.0 by @dependabot in #28
• chore(deps): bump github.com/zeromicro/go-zero from 1.4.5 to 1.5.1 by @dependabot in #29

Full Changelog: v0.2.1...v0.2.2