Fix RUSTSEC-2022-0074 / GHSA-gfgm-chr3-x6px moderate security issue in examples#502

tomhoule merged 2 commits intographql-rust:maingraphql-rust/graphql-client:mainfrom

jimmystewpot:GHSA-gfgm-chr3-x6pxjimmystewpot/graphql-client:GHSA-gfgm-chr3-x6pxCopy head branch name to clipboard