mod: bump golang.org/x/sync from 0.3.0 to 0.4.0#100

unknwon merged 1 commit intomastergogs/git-module:masterfrom

dependabot/go_modules/golang.org/x/sync-0.4.0gogs/git-module:dependabot/go_modules/golang.org/x/sync-0.4.0Copy head branch name to clipboard