Update the NETCONF stack

Depends-on: https://gerrit.cesnet.cz/c/CzechLight/dependencies/+/1796
Depends-on: https://github.com/CESNET/Netopeer2/pull/451
Change-Id: I09a3ca114b31168215a2bd8b70e9a40649e2772c
diff --git a/submodules/dependencies b/submodules/dependencies
index ca1cf67..2b77971 160000
--- a/submodules/dependencies
+++ b/submodules/dependencies
@@ -1 +1 @@
-Subproject commit ca1cf6789231a7755ae8118d4594d27726c91526
+Subproject commit 2b77971a9f534c1975d096a3ddd446d5b9e6fe08