Updates Test_TC_G_3_2.yaml

Author: raul-marquez-csa

src/app/tests/suites/certification/Test_TC_G_3_2.yaml

@@ -17,6 +17,7 @@ name: 125.3.2. [TC-G-3.2] Groups Cluster Commands [DUT-Client]
 
 PICS:
     - G.C
+    - GRPKEY.C
 
 config:
     nodeId: 0x12344321