Draft: Add Spark 4.1 support - #287

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@***bd7***90***bbe5b***630ceea73d27597364c9af683, actions/setup-python@a26af69be95***a2***3d495a4c3e4e4022e***6d87065, actions/upload-artifact@ea***65f8d65b6e75b540449e92b4886f43607fa02, aws-actions/configure-aws-credentials@cabfdba35***0de***43***bac9dba275***d97497fc***00. For more information see: https://github.blog/changelog/2025-09-***9-deprecation-of-node-20-on-github-actions-runners/