Stop using temp and replace it with tempy

https://github.com/electron/windows-installer/blob/449345d43953a82c71aef0e7f8d8328829c465be/package.json#L43

Temp has not been updated for 6 years and has outdated dependencies that have long been deprecated 
https://www.npmjs.com/package/temp

Please switch to a modern alternative like tempy
https://www.npmjs.com/package/tempy