openssl: update to 3.0.15

openssl: update to 3.0.15

OpenSSL 3.0.15 is a security patch release. The most severe CVE fixed in this release is Moderate.

This release incorporates the following bug fixes and mitigations:

  * Fixed possible denial of service in X.509 name checks (CVE-2024-6119)

  * Fixed possible buffer overread in SSL_select_next_proto() (CVE-2024-5535)

Added github releases url as source mirror

Signed-off-by: Ivan Pavlov <AuthorReflex@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16332
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>