kde@ is in favor of removing `Uses=qca` that was initially introduced to help with
the migration from OpenSSL < 1.1 for FreeBSD 11.
Add the corresponding 'LIB_DEPENDS` on those ports still using this feature.
Building this ports requires building more than 580 ports. After several runs, I got that number down to 160, but there are quite a few that don't build in my not-so-beefy machine.
So I kindly request that maintainers check the correctness of this change :-)