ci: bump the actions group across 3 directories with 8 updates - #4

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: DeLaGuardo/setup-clojure@f556541eb28a9303896cee0679ba9f60b898300f. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/