Update CHANGELOG for version 2.0.139 (#1539)

Co-authored-by: Amit Joshi <amitjoshi@microsoft.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 3 people

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Change Log - Power Platform Extension
 
-## 2.0.137
+## 2.0.139
 - pac CLI 2.5.1, (see release notes on [nuget.org](https://www.nuget.org/packages/Microsoft.PowerApps.CLI/))
 - Bug Fixes and enhancements