fix(ml): preserve Flogger and protobuf metadata in R8 release builds - #13

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-java@v4, actions/setup-node@v4, gradle/actions/setup-gradle@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Failed to restore gradle-home-v1|Linux|check[b8a35c2f917259958c9abe8f2ff1b5ff]-dd52c83d4b2bd17b9b6129145c2b2bf26a78ced5: Error: Cache service responded with 400

setup-java v4 is deprecated and will no longer receive updates. Please migrate to actions/setup-java@v5.