Bump golang.org/x/sync from 0.19.0 to 0.20.0 in /tools#473

dependabot[bot] wants to merge 1 commit intomainbufbuild/protovalidate:mainfrom

dependabot/go_modules/tools/golang.org/x/sync-0.20.0bufbuild/protovalidate:dependabot/go_modules/tools/golang.org/x/sync-0.20.0Copy head branch name to clipboard