fix(deps): pin lodash types (angular#4260)

Author: clydin

package.json

@@ -130,7 +130,7 @@
     "@types/fs-extra": "^0.0.31",
     "@types/glob": "^5.0.29",
     "@types/jasmine": "^2.2.32",
-    "@types/lodash": "^4.14.43",
+    "@types/lodash": "4.14.50",
     "@types/mock-fs": "^3.6.30",
     "@types/node": "^6.0.36",
     "@types/request": "0.0.30",