Bug#1122967: libocct-foundation-dev on bullseye is missing main cmake config file (OpenCASCADEConfig.cmake)

[andrej...@icloud.com]

Ahh, I'm sorry, in the previous email I've attached the wrong package version 
in headers - I meant to attach `7.5.1+dfsg1-2`, not `7.6.3+dfsg1-7`.