11-Jun-2026 — bump actions/cache to v5 to clear Node 20 deprecation warning ref #185
- #185 moved checkout and setup-node to v6 in March, but the node_modules
caching steps added later by the #201 perf work used actions/cache@v4,
which still targets Node 20 and reintroduced the deprecation warning
- bump all 12 actions/cache references across the docker-image and
integration-worker workflows to v5 (Node 24 runtime); inputs are
unchanged so existing cache keys keep working