Upgrade go version to 1.18

[purelind]

Enhancement

Upgrade go version to 1.18

[bb7133]

PTAL @hawkingrei

[rleungx]

There are several issues when using golangci-lint with 1.18. More compatibility issues can be found in golangci/golangci-lint#2438

[hawkingrei]

There are several issues when using golangci-lint with 1.18. More compatibility issues can be found in golangci/golangci-lint#2438

You can update the image except for linter.

[purelind]

ci pipeline on master branch has upgrade go version from go1.16 go go1.18.