feat: Upgrade ci dependencies - #289

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: ocaml/setup-ocaml@4dd53a587b9836a35604fec9601e606ff42145bc. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/