Fixing Mocha tests by locking follow-redirects version to 1.5.10 (#1993)

package.json

@@ -73,7 +73,7 @@
   },
   "typings": "./index.d.ts",
   "dependencies": {
-    "follow-redirects": "^1.4.1",
+    "follow-redirects": "1.5.10",
     "is-buffer": "^2.0.2"
   },
   "bundlesize": [