Bump tokio from 1.19.2 to 1.20.4 in /server#46

dependabot[bot] wants to merge 1 commit intomainedwardsharp/youoke:mainfrom

dependabot/cargo/server/tokio-1.20.4edwardsharp/youoke:dependabot/cargo/server/tokio-1.20.4Copy head branch name to clipboard