Specify package version for ESP32

.github/workflows/build_push.yml

@@ -84,4 +84,4 @@ jobs:
         with:
           sketch-names: esp32_marauder.ino
           arduino-board-fqbn: esp32:esp32:esp32s2
-          platform-url: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json
+          platform-url: https://github.com/espressif/arduino-esp32/releases/download/2.0.0-rc1/package_esp32_dev_index.json