don't use dev platform for esp32 tests

Author: Richard Unger

.github/workflows/ccpp.yml

@@ -58,15 +58,15 @@ jobs:
             sketch-names: single_full_control_example.ino
 
           - arduino-boards-fqbn: esp32:esp32:esp32s2 # esp32s2
-            platform-url: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json
+            platform-url: https://espressif.github.io/arduino-esp32/package_esp32_index.json
             sketch-names: bldc_driver_3pwm_standalone.ino,stepper_driver_2pwm_standalone.ino,stepper_driver_4pwm_standalone.ino
 
           - arduino-boards-fqbn: esp32:esp32:esp32s3 # esp32s3
-            platform-url: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json
+            platform-url: https://espressif.github.io/arduino-esp32/package_esp32_index.json
             sketch-names: esp32_position_control.ino, esp32_i2c_dual_bus_example.ino
 
           - arduino-boards-fqbn: esp32:esp32:esp32doit-devkit-v1 # esp32 
-            platform-url: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json
+            platform-url: https://espressif.github.io/arduino-esp32/package_esp32_index.json
             sketch-names: esp32_position_control.ino, esp32_i2c_dual_bus_example.ino, esp32_current_control_low_side.ino, esp32_spi_alt_example.ino
 
           - arduino-boards-fqbn: STMicroelectronics:stm32:GenF1:pnum=BLUEPILL_F103C8 # bluepill - hs examples