Update GitHub actions

[andyasp]

Release sections for each:

• https://github.com/actions/checkout/releases
• https://github.com/actions/setup-go/releases
• https://github.com/golangci/golangci-lint-action/releases
• https://github.com/golangci/golangci-lint/releases

I included a golangci-lint version for the golangci-lint-action since their README said it was required.