Exclude test from integration

tests/validation/config.json

@@ -894,7 +894,8 @@
         {
             "title": "KTX2 decoder test",
             "playgroundId": "#EIJH8L#1",
-            "referenceImage": "ktx2decoder.png"
+            "referenceImage": "ktx2decoder.png",
+            "excludeFromAutomaticTesting": true
         }
     ]
 }