Update arduinojson to v7.0.3 (#3265)

packages/a/arduinojson/xmake.lua

@@ -7,6 +7,7 @@ package("arduinojson")
     add_urls("https://github.com/bblanchon/ArduinoJson/archive/refs/tags/$(version).tar.gz",
              "https://github.com/bblanchon/ArduinoJson.git")
 
+    add_versions("v7.0.3", "6da2d069e0caa0c829444912ee13e78bdf9cc600be632428a164c92e69528000")
     add_versions("v6.21.4", "9551af9282372f6e64cf4009fc43be7f2df6eb96fe9c0aab44d4eed217d09747")
 
     add_deps("cmake")