ci(github): limit pre-caching to dependencies of Serenity/JS modules
ci(github): limit pre-caching to dependencies of Serenity/JS modules

pre-caching more doesn't improve the performance of the subsequent stages of the pipeline
significantly enough to justify the cost

jan-molak/serenity-js,jan-molak/serenity-js,jan-molak/serenity-js,jan-molak/serenity-js