tests: use lab 14.x to keep node 6 support

scragg0x · scragg0x · commit 7ab9c08f19c6 · 2018-05-08T12:06:00.000-05:00
diff --git a/package.json b/package.json
@@ -18,6 +18,6 @@
   },
   "devDependencies": {
     "code": "^3.0.2",
-    "lab": "15.x.x"
+    "lab": "14.x.x"
   }
 }
