chore: Updates CHANGELOG.md header for v1.21.3 release

svc-apix-Bot · svc-apix-Bot · commit 3f021d3e1d57 · 2024-10-25T07:33:08.000Z
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## (Unreleased)
 
+## 1.21.3 (October 25, 2024)
+
 NOTES:
 
 * data-source/mongodbatlas_project: Deprecates `is_slow_operation_thresholding_enabled`. Attribute will be supported in a separate data source as it requires different set of permissions ([#2731](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/2731))
