build(deps): bump rust-s3 from 0.27.0 to 0.31.0 in /atcoder-problems-backend#3

dependabot[bot] wants to merge 1 commit intomasterpenicillin0/AtCoderProblems:masterfrom

dependabot/cargo/atcoder-problems-backend/rust-s3-0.31.0penicillin0/AtCoderProblems:dependabot/cargo/atcoder-problems-backend/rust-s3-0.31.0Copy head branch name to clipboard