Update lodash dependency to ^4.17.11 (#297)

* update lodash dependency to ^4.17.11

* update changelog

Author: brandonhudavid

packages/optimizely-sdk/package-lock.json

@@ -37,7 +37,7 @@
     "@optimizely/js-sdk-logging": "^0.1.0",
     "@optimizely/js-sdk-utils": "^0.1.0",
     "json-schema": "^0.2.3",
-    "lodash": "^4.0.0",
+    "lodash": "^4.17.11",
     "murmurhash": "0.0.2",
     "promise-polyfill": "8.1.0",
     "uuid": "^3.3.2"