[Core] Update Changelog.md (#16794)

seankane-msft · web-flow · commit 52381277a9e2 · 2022-01-11T11:58:41.000-05:00
Update changelog for release
diff --git a/sdk/azcore/CHANGELOG.md b/sdk/azcore/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release History
 
-## 0.21.0 (Unreleased)
+## 0.21.0 (2022-01-11)
 
 ### Features Added
 * Added `AllowedHeaders` and `AllowedQueryParams` to `policy.LogOptions` to control which headers and query parameters are written to the logger.
