Update variant2 from master

boost-commitbot · boost-commitbot · commit 72e54bee5b63 · 2026-01-04T03:09:15.000Z
diff --git a/libs/variant2 b/libs/variant2
@@ -1 +1 @@
-Subproject commit f267609ad6f5dac4aa2d664d613701b50ede0404
+Subproject commit 155ed414abf2ebaa980ee515479bad0dce834b2f
