security/openvpn-devel: upgrade to commit 64fae9d829
this brings in the upstream development work that has happened over
the last two months, plus two CVE fixes:
- fix race condition in TLS handshake that could lead to leaking of
packet data from a previous handshake under specific circumstances
(CVE-2026-40215)
(Bug found by XlabAI Team of Tencent Xuanwu Lab (xlabai at tencent.com))
- fix server ASSERT() on receiving a suitably malformed packet with
a valid tls-crypt-v2 key (CVE-2026-35058)
(Bug found by XlabAI Team of Tencent Xuanwu Lab (xlabai at tencent.com)
and independently by Emma Reuter of Cisco ASIG (TALOS-2026-2381))
besides this, most of the commits are code maintenance - modernizing
code, adjusting OpenSSL APIs used to be 4.0 compatible, adding more
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