chore: Update js-sdk-utils to 0.2.0 (#447)

Summary:

Update the dependency version of js-sdk-utils within js-sdk-datafile-manager to 0.2.0.

Test plan:

Existing tests

Author: mjc1283

packages/datafile-manager/package-lock.json

@@ -43,7 +43,7 @@
   },
   "dependencies": {
     "@optimizely/js-sdk-logging": "^0.1.0",
-    "@optimizely/js-sdk-utils": "^0.1.0"
+    "@optimizely/js-sdk-utils": "^0.2.0"
   },
   "peerDependencies": {
     "@react-native-community/async-storage": "^1.2.0"