docs: updated CHANGELOG with PCC Default Config repo

CHANGELOG.md

@@ -3,12 +3,17 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ---
+## [Unreleased] - 2021-09-03
+
+### Added
+
+- Added link to PCC default configuration for version 21.04.412
+
 ## [0.0.8-bb.1] - 2021-08-26
 
 ## Added
 
 - Added istio sidecar scraping network policy
-- Added link to PCC default configuration for version 21.04.412
 
 ## [0.0.8-bb.0] - 2021-08-16