nvidia/driver-daemonset: bump memory request 256Mi → 822Mi

krr 2026-05-22 flagged nvidia-driver-daemonset as critically
under-requested (~566 MiB gap). Live driver process holds ~600-800Mi
once the kernel module is loaded. Limit stays at 2Gi so the DKMS build
during a kernel upgrade still has headroom (documented in values.yaml
to need ~1.4 GiB peak).

May help unblock code-8vr0 (GPU driver crashloop on node1) if the
crashloop was OOM-driven.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

stacks/nvidia/modules/nvidia/values.yaml

@@ -37,7 +37,7 @@ driver:
   resources:
     requests:
       cpu: "50m"
-      memory: "256Mi"
+      memory: "822Mi"
     limits:
       memory: "2Gi"