Updates metadot: caa2827 Fix: avoid dependency installation errors when there are...

diff --git a/metadot b/metadot
index 737a43ad52fcd9125afcc362cf5471be0c91ee8f..caa28279addabee532cc75bae41a25add2a00f9d 160000 (submodule)
--- a/metadot
+++ b/metadot
@@ -1 +1 @@
-Subproject commit 737a43ad52fcd9125afcc362cf5471be0c91ee8f
+Subproject commit caa28279addabee532cc75bae41a25add2a00f9d