Swift C++ Interoperability example - #234

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-python@v5, bazel-contrib/setup-bazel@0.15.0, jwlawson/actions-setup-cmake@v1.14. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/