Bump golang.org/x/sync from 0.12.0 to 0.13.0#447

dependabot[bot] wants to merge 1 commit intomastermackerelio/mackerel-container-agent:masterfrom

dependabot/go_modules/golang.org/x/sync-0.13.0mackerelio/mackerel-container-agent:dependabot/go_modules/golang.org/x/sync-0.13.0Copy head branch name to clipboard