debian/patches/CVE-2026-8932.patch: promote the client certificate
type, private key, key type and key password into ssl_primary_config
so the connection-reuse and session-cache match checks cover the full
mTLS client credential, in lib/urldata.h, lib/url.c, lib/vtls/vtls.c
and the TLS/ldap/ssh consumers, so a reused connection cannot inherit
a different client credential.