The Gitea Actions cache service now answers on 10.200.0.1:43513
(post nftables fix on the runner side). Turn `cache: true` and
`cache: pnpm` back on so setup-go/setup-node can use it for
cross-job tarball caching on top of the host-persistent caches we
already rely on.
The setup-* actions still tolerate the cache being unavailable, so
this is reversible to `cache: false` if the service goes away again.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>