net/qt5-network: fix build with LibreSSL 3.4.0

"Upstream has erroneous #ifdefs which will lead to a runtime abort
if both TLS1_3_VERSION and OPENSSL_NO_PSK are defined. Adjust
them."

Obtained from:
https://github.com/openbsd/ports/commit/21d28f231753b5cef153a8ff487573ab5994769e

Approved by: fluffy (mentor, kde)
Differential Revision: https://reviews.freebsd.org/D32286

(cherry picked from commit 6953f406af68fd1d6e75d60101a64b8f7c3d0529)