Remove explicit zlib dependency.

kring · kring · commit 5c759d3cf8e0 · 2025-10-17T16:17:22.000+11:00
diff --git a/extern/cesium-native b/extern/cesium-native
@@ -1 +1 @@
-Subproject commit 1cdb48a8daf12550087256045efdc8f998350000
+Subproject commit fc680205351d88bd5f7a7290c89ab940123a0876
