chore(k8): adjusted system resources requests and limits based on manual monitoring

adguardhome/k8s/adguard.yaml

@@ -42,10 +42,10 @@ spec:
           image: adguard/adguardhome:latest
           resources:
             limits:
-              memory: "1Gi"
-              cpu: "500m"
+              memory: "1.5Gi"
+              cpu: "300m"
             requests:
-              memory: "128Mi"
+              memory: "500Mi"
               cpu: "50m"
           ports:
             - containerPort: 3000