Updating changeset message

Author: rafikhan

.changeset/calm-apes-collect.md

@@ -2,4 +2,6 @@
 '@firebase/webchannel-wrapper': minor
 ---
 
-Upgrade to the latest version of google closure library and compiler
+Upgrade to the latest version of google closure library and compiler. This dependency will be
+necessary for future updates to the @firebase/firestore package. Developers will not need to
+make any changes to their code to handle this change.