chore(package): update @types/jest to version 25.2.3

Closes #24

Author: greenkeeper[bot]

demo/package.json

@@ -49,7 +49,7 @@
     "@nguniversal/common": "^7.0.2",
     "@nguniversal/express-engine": "^7.0.2",
     "@nguniversal/module-map-ngfactory-loader": "^7.0.2",
-    "@types/jest": "^24.0.13",
+    "@types/jest": "^25.2.3",
     "@types/node": "^11.13.11",
     "codelyzer": "^4.5.0",
     "express": "^4.17.0",