build(deps): bump sumup from 0.5.5 to 0.5.6 in /backend/rust in the sumup-sdk group#12

dependabot[bot] wants to merge 1 commit intomainsumup/sumup-reader-examples:mainfrom

dependabot/cargo/backend/rust/sumup-sdk-6d937afb77sumup/sumup-reader-examples:dependabot/cargo/backend/rust/sumup-sdk-6d937afb77Copy head branch name to clipboard