AS @John O'Reilly says, AS4.2C8 was recently released, you need to download and install it, it is not possible to update "online". Warn you also (if it is of any importance) standard IDE font has changed from "Consolas" to "JetBrains Mono", which may feel a little bit "packed" and is a tiny bit larger. You can change back to "Consolas" using File->Settings:Editor->Font and change Font to "Consolas".