[firebase-release] Removed change log and reset repo after 13.4.1 release

Author: google-oss-bot

CHANGELOG.md

@@ -1,5 +0,0 @@
-- Released Firestore emulator v1.19.2, which fixes some bugs affecting client SDKs when in Datastore Mode.
-- Fix demo projects + web frameworks with emulators (#6737)
-- Fix Next.js static routes with server actions (#6664)
-- Fixed an issue where `GOOGLE_CLOUD_QUOTA_PROJECT` was not correctly respected. (#6801)
-- Make VPC egress settings in functions parameterizeable (#6843)