Update cesium-native (still no functional changes).

kring · kring · commit 1a327aec2533 · 2021-11-01T12:50:26.000+11:00
diff --git a/extern/cesium-native b/extern/cesium-native
@@ -1 +1 @@
-Subproject commit 458e05d37231ad6ed0558f264884b02e43347c4e
+Subproject commit b72bd23b1a8f05e27967182c29ae7ed1d06c25ac
