change esp32 package json to stable one

Author: hathach

build_platform.py

@@ -65,7 +65,8 @@
 BSP_URLS = (
     "https://adafruit.github.io/arduino-board-index/package_adafruit_index.json,"
     "http://arduino.esp8266.com/stable/package_esp8266com_index.json,"
-    "https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json,"
+    #"https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json," # esp32 beta release
+    "https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json,"
     "https://sandeepmistry.github.io/arduino-nRF5/package_nRF5_boards_index.json,"
     "https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json,"
     "https://drazzy.good-enough.cloud/package_drazzy.com_index.json,"