Merge vk-gl-cts/opengl-es-cts-3.2.4 into vk-gl-cts/opengl-es-cts-3.2.5

Change-Id: I532ef4af8f22f1a0218de55c32da695c3e5a2b2a
diff --git a/external/fetch_sources.py b/external/fetch_sources.py
index 4704c95..85c6c80 100644
--- a/external/fetch_sources.py
+++ b/external/fetch_sources.py
@@ -239,7 +239,7 @@
 
 PACKAGES = [
 	SourcePackage(
-		"http://zlib.net/zlib-1.2.11.tar.gz",
+		"https://zlib.net/fossils/zlib-1.2.11.tar.gz",
 		"zlib-1.2.11.tar.gz",
 		"c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1",
 		"zlib"),