@AmitK283 Hi, Greetings. No, we cannot force Pega engine to use a different jQuery version, you need to update to latest available path or version if you need a different jQuery version. if you do a f12 on browser and look for jQuery UI version, you will know what version is Pega using, example i am on Pega 8.7.1 and i use 1.12.1
I linked this Question to the SR you referenced in your original post. Did @KOMARINA answer your question? If so, please mark their reply as the Accepted Solution. Also, if he answered it, we can resolve your SR ticket as well.