ci: always preserve the cache even for failing jobs

Author: CMCDragonkai

.gitlab-ci.yml

@@ -25,6 +25,8 @@ variables:
 # Cached directories shared between jobs & pipelines per-branch per-runner
 cache:
   key: $CI_COMMIT_REF_SLUG
+  # Preserve cache even if job fails
+  when: 'always'
   paths:
     - ./tmp/npm/
     - ./tmp/ts-node-cache/