feat(balcao): customers so telefone, cnpj alfanumerico, estorno de resgate e correcao do cartao (tasks 49, 57, 44, 43) - #35

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-node@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/