chore: update libsession version

Aerilym · Aerilym · commit 78a46bb685e6 · 2025-10-23T16:23:44.000+11:00
diff --git a/libsession-util b/libsession-util
@@ -1 +1 @@
-Subproject commit 7cb1ea3fd666b7eb726cee90e9952b36be19d8c3
+Subproject commit 8136920cf7d2785b41047c69851d3e44c3f15921
