chore: add checks for App Store Connect API keys in workflow

Author: OnestarLee

sample/ios/fastlane/Fastfile

@@ -1,5 +1,5 @@
-PACKAGE_JSON=read_json(json_path: "#{Dir.pwd}/../../package.json")
-VERSION=PACKAGE_JSON[:version]
+PACKAGE_JSON=read_json(json_path: "#{Dir.pwd}/../package.json")
+VERSION=PACKAGE_JSON["version"]
 DATE=Time.new.strftime("%Y.%m%d.%H%M")
 
 before_all do |lane, options|