openssl: upgrade 3.5.8 -> 3.5.9

Release information [1]:

OpenSSL 3.5.9 is a security patch release. The most severe CVE fixed in this release is High.
This release incorporates the following bug fixes and mitigations:
* Fixed DTLS retransmissions of handshake messages from a stale buffer offset. (CVE-2026-84782)
* Fixed excessive memory allocation in relative CRLDP processing. (CVE-2026-35189)
* Fixed QUIC unvalidated amplification credit may be over-accounted. (CVE-2026-35191)
* Fixed potential CPU DoS via O(n^2) fragment reassembly in QUIC. (CVE-2026-42772)
* Fixed a timing side-channel in scalar multiplication for mon-NIST EC curves. (CVE-2026-54872)
* Fixed QUIC STREAM fragment metadata DoS. (CVE-2026-54873)
* Fixed non-constant-time SM2 scalar multiplication on ARM64 and RISC-V. (CVE-2026-54875)
* Fixed out-of-bounds access after SSL_set_SSL_CTX() during a handshake. (CVE-2026-72897)
* Fixed QUIC connection-level flow control was not enforced for streams. (CVE-2026-75804)
* Fixed a NULL pointer dereference in CMP client revocation response handling. (CVE-2026-75805)
* Fixed an unauthenticated and undersized DTLS 1.2 AEAD record causing DoS. (CVE-2026-75806)
* Fixed a timing side-channel in SM2 signature generation. (CVE-2026-77696)
* Fixed an unbounded RETIRE_CONNECTION_ID backlog in QUIC stack implementation. (CVE-2026-84784)
* Fixed a bug where EVP_DecryptFinal() incorrectly reported a stale success on AES-SIV authentication failure.

[1] https://github.com/openssl/openssl/blob/openssl-3.5/NEWS.md#major-changes-between-openssl-358-and-openssl-359-29-sep-2026

(From OE-Core rev: f035c4ec526ef52690e6fbfc4c02fd27a5b6a975)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>

meta/recipes-connectivity/openssl/openssl_3.5.9.bb

@@ -19,7 +19,7 @@ SRC_URI:append:class-nativesdk = " \
            file://environment.d-openssl.sh \
            "
 
-SRC_URI[sha256sum] = "a8f84a39918ec6415ce765d9b429d313ba97b8143169c172e734b9514464f5b2"
+SRC_URI[sha256sum] = "603f5602e2eef00d77fbd429d34dcd5822bb301757a1bc9cdb24c670f1eb859a"
 
 inherit lib_package multilib_header multilib_script ptest perlnative manpages
 MULTILIB_SCRIPTS = "${PN}-bin:${bindir}/c_rehash"