chore(package): update core-js

Author: Awk34

Diff for: templates/app/_package.json

@@ -4,8 +4,8 @@
   "main": "server/index.js",
   "dependencies": {
     "compression": "^1.7.1",
-    "core-js": "^2.4.1",
     "cors": "^2.8.1",
+    "core-js": "^2.5.0",
     "express": "^4.13.3",
     "morgan": "~1.8.2",
     "body-parser": "^1.13.3",
@@ -64,7 +64,7 @@
     <%#"@angular/material": "5.0.0-rc0",%>
     "@angularclass/hmr": "^2.1.3",
   <%_ if(filters.ts) { -%>
-    "@types/core-js": "^0.9.41",
+    "@types/core-js": "^2.5.0",
     <%_ if(filters.jasmine) { -%>
     "@types/jasmine": "^2.5.47",
     <%_ } -%>