Updates ckandumper: 4e935db Put all package contents in a single async loop

diff --git a/ckandumper b/ckandumper
index e1bb000864ffe7e303d1cb180d757dffb0328389..4e935dbe2b86d887f38bdcddd6f00042f28d7b9a 160000 (submodule)
--- a/ckandumper
+++ b/ckandumper
@@ -1 +1 @@
-Subproject commit e1bb000864ffe7e303d1cb180d757dffb0328389
+Subproject commit 4e935dbe2b86d887f38bdcddd6f00042f28d7b9a