Problem with Objective-C import on the build server

[janosch1 at mailbox.org]

> 
> Am 23.03.2021 um 08:25 schrieb Ryan Schmidt <ryandesign at macports.org>:
> 
> You forgot to increase the MacPass port's revision when you modified it to install the headers.
> 

That was the problem, indeed. Thank you.