Update CHANGELOG.md

Author: brizental

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 * [#696](https://github.com/mozilla/glean.js/pull/696): Expose Node.js entry point `@mozilla/glean/node`.
 * [#695](https://github.com/mozilla/glean.js/pull/695): Implement PlatformInfo module for the Node.js platform.
+* [#695](https://github.com/mozilla/glean.js/pull/730): Implement Uploader module for the Node.js platform.
+
 
 # v0.19.0 (2021-09-03)