kssl: Update for LibreSSL 3.7
Current LibreSSL versions do not need these legacy OpenSSL code paths which will result in a build failure.
Based on patches from OpenBSD:
https://github.com/openbsd/ports/blob/29e060f1b622de29c6fe98cbd08039d12f05c1e1/devel/kf5/kdelibs4support/patches/patch-src_kssl_kopenssl_cpp https://github.com/openbsd/ports/blob/29e060f1b622de29c6fe98cbd08039d12f05c1e1/devel/kf5/kdelibs4support/patches/patch-src_kssl_ksslcertificate_cpp