feat: Bump Datafile Manager version (#502)

Summary:

Bump datafile-manager version to 0.6.0. This adds support for private datafiles for Node.

Test Plan:

- Unit tests added in the datafile-manager package along with the implementation.
- Full Stack Compat Suite tests will be added to explicitly test this feature.

Author: zashraf1985

packages/optimizely-sdk/CHANGELOG.MD

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### New Features
+- upgrade js-sdk-datafile-manager to 0.6.0 which adds support for `datafileAccessToken` within `datafileOptions` for private datafiles.
+
 ### Bug fixes
 - Added definition of `getFeatureVariable` method in TypeScript type definitions
 - Fixed return type of `getAllFeatureVariables` method in TypeScript type definitions

packages/optimizely-sdk/lib/index.d.ts

@@ -34,6 +34,7 @@ declare module '@optimizely/optimizely-sdk' {
     autoUpdate?: boolean;
     updateInterval?: number;
     urlTemplate?: string;
+    datafileAccessToken?: string;
   }
 
   // The options object given to Optimizely.createInstance.

packages/optimizely-sdk/package-lock.json

@@ -41,7 +41,7 @@
   },
   "homepage": "https://github.com/optimizely/javascript-sdk/tree/master/packages/optimizely-sdk",
   "dependencies": {
-    "@optimizely/js-sdk-datafile-manager": "^0.5.0",
+    "@optimizely/js-sdk-datafile-manager": "^0.6.0",
     "@optimizely/js-sdk-event-processor": "^0.4.0",
     "@optimizely/js-sdk-logging": "^0.1.0",
     "@optimizely/js-sdk-utils": "^0.2.0",