deps: update http-errors >> v1.8.0

Author: 3imed-jaberi

package.json

@@ -50,7 +50,8 @@
     "escape-html": "^1.0.3",
     "fresh": "~0.5.2",
     "http-assert": "^1.3.0",
-    "http-errors": "^1.6.3",
+    "http-errors": "^1.8.0",
+    "is-generator-function": "^1.0.7",
     "koa-compose": "^4.1.0",
     "on-finished": "^2.3.0",
     "parseurl": "^1.3.2",