Jeff Hill has a script for us:
In the world of PowerShell, some things move super fast while others may stay the same for years. If the module you are using does what you want with no issues, you may not think to see if a newer version is available. The PSReadline module is a good example. The version I was on worked great and it did what I wanted. I had no idea there was so much more that had been done.
Click through for a script which checks the Powershell Gallery for updates, though it does not force install those updates.