Hey Abhishek , Landslides are a part of this region ... If you can wait then go in December and enjoy snowfall, if you are fine to take little risk then go ahead .... Happy and safe Travelling !!!
Everything is fine now as per climate perspective but you can still follow up with the current weather updates before going there . No risk as of now .
Weather is fine as of now in Shimla, as for landslides it is common during monsoons in hill station.. one advice would be to check weather forecast before going