Fix esp32 board manager URL

Author: ianfixes

CHANGELOG.md

@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Fixed
 - Warnings about directory name mismatches are now based on proper comparison of strings
+- Now using the recommended "stable" URL for the `esp32` board family
 
 ### Security
 

misc/default.yml

@@ -16,7 +16,7 @@ packages:
   adafruit:samd:
     url: https://adafruit.github.io/arduino-board-index/package_adafruit_index.json
   esp32:esp32:
-    url: https://dl.espressif.com/dl/package_esp32_index.json
+    url: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
 
 platforms:
 

spec/ci_config_spec.rb

@@ -29,7 +29,7 @@
 
       expect(default_config.package_url("adafruit:avr")).to eq("https://adafruit.github.io/arduino-board-index/package_adafruit_index.json")
       expect(default_config.package_url("adafruit:samd")).to eq("https://adafruit.github.io/arduino-board-index/package_adafruit_index.json")
-      expect(default_config.package_url("esp32:esp32")).to eq("https://dl.espressif.com/dl/package_esp32_index.json")
+      expect(default_config.package_url("esp32:esp32")).to eq("https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json")
       expect(default_config.platforms_to_build).to match(["uno", "due", "zero", "leonardo", "m4", "esp32", "esp8266", "mega2560"])
       expect(default_config.platforms_to_unittest).to match(["uno", "due", "zero", "leonardo"])
       expect(default_config.aux_libraries_for_build).to match([])