Update RTL8720 firmware (v2.1.0)

Author: matsujirushi

platformio.ini

@@ -15,13 +15,13 @@ framework = arduino
 platform_packages = framework-arduino-samd-seeed@https://github.com/Seeed-Studio/ArduinoCore-samd.git#v1.8.1
 lib_deps = 
     https://github.com/Seeed-Studio/Seeed_Arduino_rpcWiFi#v1.0.1
-    https://github.com/Seeed-Studio/Seeed_Arduino_rpcUnified#v2.0.2
+    https://github.com/Seeed-Studio/Seeed_Arduino_rpcUnified#v2.1.0
     https://github.com/Seeed-Studio/Seeed_Arduino_mbedtls#dev
     https://github.com/Seeed-Studio/Seeed_Arduino_FS
     https://github.com/Seeed-Studio/Seeed_Arduino_SFUD
     https://github.com/sstaub/NTP
     PubSubClient
-    https://github.com/lovyan03/LovyanGFX#0.3.3
+    https://github.com/lovyan03/LovyanGFX#0.3.4
     https://github.com/ciniml/ExtFlashLoader
     https://github.com/Seeed-Studio/Seeed_Arduino_LIS3DHTR
     MsgPack