v0.6.32: the truth cut — RDFC-1.0 graph_digest, VALUES-on-graph-var refuses, staged refuses in txn blocks (#117, #109, #123) - #126

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