Update base64 requirement from 0.22 to 0.23 - #10

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@v4, actions/checkout@v4, brndnmtthws/rust-action-cargo-binstall@v1, brndnmtthws/rust-action-rustup@v1. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/