bump mongo 3.6.6

Author: mtrezza

package.json

@@ -46,7 +46,7 @@
     "lodash": "4.17.21",
     "lru-cache": "5.1.1",
     "mime": "2.5.2",
-    "mongodb": "3.6.5",
+    "mongodb": "3.6.6",
     "mustache": "4.1.0",
     "parse": "3.1.0",
     "pg-monitor": "1.4.1",