resolve json module option added

tests/network-tests/tsconfig.json

@@ -9,6 +9,7 @@
     "forceConsistentCasingInFileNames": true,
     "skipLibCheck": true,
     "baseUrl": ".",
+    "resolveJsonModule": true,
     "paths": {
       "@polkadot/types/augment": ["../../types/src/definitions/augment-types.ts"]
     }