[CocoaPods] Update .podspec to 4.1.0
[CocoaPods] Update .podspec to 4.1.0

Maxim-Inv/Moya-ModelMapper,sunshinejr/Moya-ModelMapper,Maxim-Inv/Moya-ModelMapper,Maxim-Inv/Moya-ModelMapper,sunshinejr/Moya-ModelMapper,sunshinejr/Moya-ModelMapper