Minor clean up / bikeshedding - #406

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: rrainn/dynamodb-action@36eaff1005b37a22258716d4280f9e0377b834aa. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/