Removed deprecated sampletab code. - #645

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4.2.2, astral-sh/setup-uv@v6.3.0. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

manifest-file does not contain version 0.13.6, arch x86_64, platform unknown-linux-gnu. Falling back to GitHub releases.