Bump dio, json_annotation, build_runner, json_serializable and github#3

dependabot[bot] wants to merge 1 commit intomasterflutter-jp/flutter_github_api:masterfrom

dependabot/pub/dio-and-json_annotation-and-build_runner-and-json_serializable-and-github-5.0.3flutter-jp/flutter_github_api:dependabot/pub/dio-and-json_annotation-and-build_runner-and-json_serializable-and-github-5.0.3Copy head branch name to clipboard