Feature/add download qrcode button - #69

Error: Unavailable version 3.4.8 for ruby on ubuntu-26.04 Only the latest patch release of each series is built for newer runner images. ruby-3.4.12 is available on ubuntu-26.04: use ruby-version: '3.4.12', or '3.4' to always use the latest 3.4.x release. Cause: Unexpected HTTP response: 404 at /home/runner/work/_actions/ruby/setup-ruby/v1/dist/index.js:45918:15 at process.processTicksAndRejections (node:internal/process/task_queues:104:5) at async body (/home/runner/work/_actions/ruby/setup-ruby/v1/dist/index.js:372:14)