[jest]: make ts-jest shut up

jest.config.js

@@ -2,13 +2,12 @@ module.exports = {
   preset: "ts-jest",
   verbose: true,
   bail: true,
-  jsx: true,
   testEnvironment: 'node',
-  setupFilesAfterEnv: ['<rootDir>/setupTests.js'],
+  setupFilesAfterEnv: ['<rootDir>/setupTests.ts'],
   snapshotSerializers: [
     'enzyme-to-json/serializer'
   ],
   transform: {
-    ".(ts|tsx)": "<rootDir>/node_modules/ts-jest/preprocessor.js"
+    ".(ts|tsx)": "ts-jest"
   },
 }