Update the NETCONF stack

Adds libyang::Iffeature::value

Depends-on: https://gerrit.cesnet.cz/c/CzechLight/dependencies/+/2094
Change-Id: Ic520e00a0462e0acbfd5d15d32c54f6e0408c83b
diff --git a/submodules/dependencies b/submodules/dependencies
index 7f378d1..2d91a55 160000
--- a/submodules/dependencies
+++ b/submodules/dependencies
@@ -1 +1 @@
-Subproject commit 7f378d15b8194e0c84ed00ea07a5c3e4f9565838
+Subproject commit 2d91a55add68ebcc21322956e51ebf51458fc2c3