Update README.md - #34

Process completed with exit code 1.

Trying to deserialize a serialized ActorRef without an ActorSystem in scope. Use 'org.apache.pekko.serialization.JavaSerializer.currentSystem.withValue(system) { ... }'

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