[release] 6.4.7 - Clean up data in StatsigFetcher (#581)

* Bot: Updated File package.json

* Bot: Updated File/s [package-lock.json]

---------

Co-authored-by: statsig-kong[bot] <statsig-kong[bot]@users.noreply.github.com>

Author: sroyal-statsig

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "statsig-node",
-  "version": "6.4.6",
+  "version": "6.4.7",
   "description": "Statsig Node.js SDK for usage in multi-user server environments.",
   "main": "dist/index.js",
   "scripts": {