Update Jest

Author: adamwathan

package.json

@@ -36,7 +36,7 @@
     "eslint-config-postcss": "^2.0.2",
     "eslint-config-prettier": "^6.0.0",
     "eslint-plugin-prettier": "^3.0.1",
-    "jest": "^24.3.1",
+    "jest": "^25.1.0",
     "prettier": "^1.7.4",
     "rimraf": "^3.0.0"
   },