fix: declare async TCP PlatformIO dependencies

test/compile-project/src/main.cpp

@@ -0,0 +1,10 @@
+#include <Arduino.h>
+#include <WiFiManager.h>
+
+WiFiManager wifiManager;
+
+void setup() {
+    wifiManager.setConfigPortalTimeout(1);
+}
+
+void loop() {}