[3.9] bpo-45007: Update multissl to openssl 1.1.1l as well (GH-28044) (GH-28062)

This was missed while upgrading CI..
(cherry picked from commit d6cb5dd)

Co-authored-by: Łukasz Langa <[email protected]>

Author: tiran

Tools/ssl/multissltests.py

@@ -49,8 +49,8 @@
 ]
 
 OPENSSL_RECENT_VERSIONS = [
-    "1.1.1k",
-    "3.0.0-alpha16"
+    "1.1.1l",
+    "3.0.0-beta1"
 ]
 
 LIBRESSL_OLD_VERSIONS = [