Update poly_collection from develop

boost-commitbot · boost-commitbot · commit 4ab2469a7fde · 2025-01-01T22:34:47.000Z
diff --git a/libs/poly_collection b/libs/poly_collection
@@ -1 +1 @@
-Subproject commit adc8658c3f6898f14f20f944e1c92043063d80e8
+Subproject commit c21f0b28eee5a607760bd128dc41c401d5ee280e
