net/kamailio: Update to 5.4.5 and tls crash fix

fixed crash in CRYPTO_THREAD_lock_free():
(enabled pthread_mutex_init() fix by LIBSSL_SET_MUTEX_SHARED flag
https://github.com/kamailio/kamailio/issues/2638#issuecomment-829318965)

Changes https://www.kamailio.org/pub/kamailio/5.4.5/ChangeLog

PR: 255486
Reviewed by: koobs
Approved by: maintainer
MFH: 2021Q2

(cherry picked from commit 92942c572274e4abc6b7da7adfa1be08864d856f)