Update the NETCONF stack

Depends-on: https://gerrit.cesnet.cz/c/CzechLight/dependencies/+/1876
Change-Id: I817c766e6b85d3432eb9ad232e24345c2041a04f
diff --git a/submodules/dependencies b/submodules/dependencies
index 0f13503..512c7bc 160000
--- a/submodules/dependencies
+++ b/submodules/dependencies
@@ -1 +1 @@
-Subproject commit 0f135039a70e638bc66f7b49230571a4ed7b9aac
+Subproject commit 512c7bcd2c0cb9d31ef5e22288d60aa426863329