Update dev dependencies

package.json

@@ -23,11 +23,11 @@
     "url": "https://github.com/brianc/node-pg-copy-streams/issues"
   },
   "devDependencies": {
-    "pg": "~4.4.3",
+    "async": "~0.2.10",
     "concat-stream": "~1.1.0",
     "gonna": "0.0.0",
-    "lodash": "~2.2.1",
     "heroku-env": "~0.1.1",
-    "async": "~0.2.10"
+    "lodash": "^4.17.11",
+    "pg": "^7.8.2"
   }
 }