Add json extension to the api config

Author: ravikiranvm

packages/server/api/jest.config.ts

@@ -12,6 +12,6 @@ export default {
       },
     ],
   },
-  moduleFileExtensions: ['ts', 'js', 'html'],
+  moduleFileExtensions: ['ts', 'js', 'html', 'json'],
   coverageDirectory: '../../../coverage/packages/server/api',
 };