PERF(cnpg): reduce cpu requests

- to allow cnpg join pod scheduling
- Falco: 40m → 30m
- Falcosidekick Web UI: 50m → 30m
- Velero UI: 50m → 30m

This frees up ~40m CPU on worker nodes to allow CNPG join pods
(which request 500m) to be scheduled successfully.

velero/argocd/velero-ui.yaml

@@ -27,7 +27,7 @@ spec:
         # Resources
         resources:
           requests:
-            cpu: 50m
+            cpu: 30m
             memory: 128Mi
           limits:
             # cpu: removed to prevent throttling