fix: declare async TCP PlatformIO dependencies

test/compile-project/platformio.ini

@@ -0,0 +1,33 @@
+[platformio]
+default_envs = esp8266
+
+[common]
+framework = arduino
+lib_ldf_mode = chain
+lib_deps =
+    WiFiManager=symlink://../..
+    ESP32Async/ESPAsyncWebServer@3.9.1
+
+[env:esp8266]
+extends = common
+platform = espressif8266
+board = d1_mini
+platform_packages =
+    platformio/framework-arduinoespressif8266 @ https://github.com/esp8266/Arduino.git#521ae60a89e64bb0d1eb7a0b7addf620ced5cad3
+build_flags =
+    -DWM_LOG_LEVEL=3
+lib_deps =
+    ${common.lib_deps}
+    ESP32Async/ESPAsyncTCP@2.0.0
+
+[env:esp32]
+extends = common
+platform = espressif32@6.13.0
+board = esp32dev
+build_unflags = -std=gnu++11
+build_flags =
+    -std=gnu++14
+    -DWM_LOG_LEVEL=3
+lib_deps =
+    ${common.lib_deps}
+    ESP32Async/AsyncTCP@3.4.9

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() {}