Variable not in scope:

Process completed with exit code 1.

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/checkout@v3, haskell/actions/setup@v2, actions/cache@v3. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/