bump quibble to 0.6.6

Author: gr2m

package-lock.json

@@ -45,7 +45,7 @@
     "nock": "13.1.3",
     "proxy": "1.0.2",
     "proxyquire": "2.1.3",
-    "quibble": "0.6.5",
+    "quibble": "0.6.6",
     "semantic-release": "18.0.0",
     "server-destroy": "1.0.1",
     "sinon": "11.1.2",