Unfortunately, you won't find such a tweak because none exists. The only thing you can do is hope that an app developer allows you to download an older version of an app (this while you're at the AppStore and trying to get the latest apps).
It's one of the "handicaps" and trade-offs of staying jailbroken on an older iOS - you don't get to enjoy all the newest bells and whistles a newer iOS and apps bring.
Marilyn