Just last week, Apple released iOS & iPadOS 16.5.1 to the general public. While the firmware didn’t give Apple devices any new features, one thing it did do was patch an actively exploited bug. For that reason, it’s strongly recommended that you update if you haven’t already (unless, of course, you’re jailbroken).
Apple stops signing iOS 16.5 following iOS 16.5.1 release, ending downgrades