Tests: Update SSSP version to 1.3

This is expected by default by the latest versions of
`aiida-quantumespresso`.

Author: sphuber

tests/conftest.py

@@ -312,7 +312,7 @@ def sssp(generate_upf_data):
     from aiida.plugins import GroupFactory
 
     SsspFamily = GroupFactory('pseudo.family.sssp')  # pylint: disable=invalid-name
-    label = 'SSSP/1.2/PBEsol/efficiency'
+    label = 'SSSP/1.3/PBEsol/efficiency'
 
     try:
         family = SsspFamily.collection.get(label=label)