Fix a linker issue for macosx 11

Somehow /usr/loacl/lib isn'T any longer in the default link path such that libfreetype isn't found.

added BugFix Build System labels

Dear @f.uhlig, @v.friese, @p.-a.loizeau,

you have been identified as code owner of at least one file which was changed with this merge request.

Please check the changes and approve them or request changes.

added CodeOwners label

merged