Update variant2 from master

cppal-commitbot · cppal-commitbot · commit 7fe11c9f6737 · 2024-12-22T19:20:34.000Z
diff --git a/libs/variant2 b/libs/variant2
@@ -1 +1 @@
-Subproject commit 8333e9af93d1a5c925435b063ec80e22d70869cb
+Subproject commit 509ce1dc77ce79ec56134711e8ad5870ee85b7ed
