Bump Polly from 8.7.0 to 8.8.0 - #621

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

=============================== Error accessing your API Token. Please make sure the CODESEE_ARCH_DIAG_API_TOKEN is set correctly in your *repository* secrets (not environment secrets). If you need a new API Token, please go to app.codesee.io/maps and create a new map. This will generate a new token for you. ===============================