PERF(falco): optimize falco cpu request

- for worker-node-2
Reduced Falco DaemonSet CPU request to prevent node-agent
scheduling failures:
- Falco: 50m → 40m (actual usage ~39m)

This optimization frees up 10m CPU per node. On worker-node-2,
this contributes to the total 110m CPU savings needed for
Velero node-agent (30m request) to be scheduled successfully.

Worker-node-2 CPU allocation before: 840m/1000m (84%)
Worker-node-2 CPU allocation after: 730m/1000m (73%)

falco/helm-values/falco.yaml

@@ -15,7 +15,7 @@ image:
 # Resource requests
 resources:
   requests:
-    cpu: 50m
+    cpu: 40m  # Reduced from 50m for worker-node-2 CPU optimization (actual usage ~39m)
     memory: 256Mi
 
 # Falco configuration