fix(smartproxy): upgrade @push.rocks/smartproxy to ^23.1.0 and adapt code/tests for its async getStatistics() API

test/test.dns-socket-handler.ts

@@ -8,7 +8,8 @@ tap.test('should NOT instantiate DNS server when dnsNsDomains is not set', async
   dcRouter = new DcRouter({
     smartProxyConfig: {
       routes: []
-    }
+    },
+    cacheConfig: { enabled: false }
   });
 
   await dcRouter.start();