Add python-asyncio-fastapi example - #57

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v2, actions/setup-java@v3, gradle/gradle-build-action@v2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Failed to restore v8-gradle|Linux|test examples-jvm[37a6259cc0c1dae299a7866489dff0bd]-19d0535fc68eb4993459717cfb77cb560c00084d: Error: Cache service responded with 400