added libressl 4.2.0 to CI (#13679)

Author: alex

.github/workflows/ci.yml

@@ -40,6 +40,7 @@ jobs:
           - {VERSION: "3.14", NOXSESSION: "tests-ssh", OPENSSL: {TYPE: "openssl", VERSION: "3.6.0"}}
           - {VERSION: "3.14", NOXSESSION: "rust,tests", OPENSSL: {TYPE: "libressl", VERSION: "4.0.1"}}
           - {VERSION: "3.14", NOXSESSION: "rust,tests", OPENSSL: {TYPE: "libressl", VERSION: "4.1.1"}}
+          - {VERSION: "3.14", NOXSESSION: "rust,tests", OPENSSL: {TYPE: "libressl", VERSION: "4.2.0"}}
           # Latest commit on the BoringSSL main branch, as of Oct 14, 2025.
           - {VERSION: "3.14", NOXSESSION: "rust,tests", OPENSSL: {TYPE: "boringssl", VERSION: "338f44af3c92ef665bf740a8127a2d69c872b52a"}}
           # Latest tag of AWS-LC main branch, as of Oct 14, 2025.