chore: update CHANGELOG.md

Author: github-actions[bot]

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Change Log
 
+## [v0.7.0](https://github.com/mongodb-js/vscode/releases/tag/v0.7.0) - 2021-12-01
+
+### Added
+- Added export to language for selected query content and aggregation content in playgrounds (VSCODE-296, #366)
+
+
+## [v0.7.0](https://github.com/mongodb-js/vscode/releases/tag/v0.7.0) - 2021-12-01
+
+### Added
+- Added export to language for selected query content and aggregation content in playgrounds (VSCODE-296, #366)
+
+
 ## [v0.6.14](https://github.com/mongodb-js/vscode/releases/tag/v0.6.14) - 2021-10-25
 
 ### Added