libyang: fix import order

I prefer as it was, but isort doesn't, let's make him happy.

Fixes: b7adea4 ("schema: adds PNode and its exact variants")
Signed-off-by: Samuel Gauthier <[email protected]>

Author: samuel-gauthier

libyang/__init__.py

@@ -79,6 +79,7 @@
     PAction,
     PActionInOut,
     PAnydata,
+    Pattern,
     PAugment,
     PCase,
     PChoice,
@@ -93,7 +94,6 @@
     PRefine,
     PType,
     PUses,
-    Pattern,
     Revision,
     SAnydata,
     SAnyxml,