chore(changelog): update CHANGELOG for v3.21.3

CHANGELOG.md

@@ -1,3 +1,5 @@
+<a name="v3.21.3"></a>
+## [v3.21.3] - 0001-01-01
 <a name="v3.21.2"></a>
 ## [v3.21.2] - 2023-04-28
 <a name="v3.21.1"></a>
@@ -1151,10 +1153,10 @@ new synthetics resources use GraphQL API schema
 ### Features
 - **alerts:** allow a 30 day violation limit for nrql conditions
 
-<a name="v2.11.1"></a>
-## [v2.11.1] - 2020-10-07
 <a name="2.11.1"></a>
 ## [2.11.1] - 2020-10-07
+<a name="v2.11.1"></a>
+## [v2.11.1] - 2020-10-07
 ### Documentation Updates
 - add website documentation for nrql_alert aggregation_window
 
@@ -1821,7 +1823,8 @@ new synthetics resources use GraphQL API schema
 ## [v0.1.1] - 2017-08-02
 <a name="v0.1.0"></a>
 ## v0.1.0 - 2017-06-21
-[Unreleased]: https://github.com/newrelic/terraform-provider-newrelic/compare/v3.21.2...HEAD
+[Unreleased]: https://github.com/newrelic/terraform-provider-newrelic/compare/v3.21.3...HEAD
+[v3.21.3]: https://github.com/newrelic/terraform-provider-newrelic/compare/v3.21.2...v3.21.3
 [v3.21.2]: https://github.com/newrelic/terraform-provider-newrelic/compare/v3.21.1...v3.21.2
 [v3.21.1]: https://github.com/newrelic/terraform-provider-newrelic/compare/v3.21.0...v3.21.1
 [v3.21.0]: https://github.com/newrelic/terraform-provider-newrelic/compare/v3.20.2...v3.21.0
@@ -1943,9 +1946,9 @@ new synthetics resources use GraphQL API schema
 [v2.13.1]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.13.0...v2.13.1
 [v2.13.0]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.12.1...v2.13.0
 [v2.12.1]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.12.0...v2.12.1
-[v2.12.0]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.11.1...v2.12.0
-[v2.11.1]: https://github.com/newrelic/terraform-provider-newrelic/compare/2.11.1...v2.11.1
-[2.11.1]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.11.0...2.11.1
+[v2.12.0]: https://github.com/newrelic/terraform-provider-newrelic/compare/2.11.1...v2.12.0
+[2.11.1]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.11.1...2.11.1
+[v2.11.1]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.11.0...v2.11.1
 [v2.11.0]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.10.3...v2.11.0
 [v2.10.3]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.10.2...v2.10.3
 [v2.10.2]: https://github.com/newrelic/terraform-provider-newrelic/compare/v2.9.0...v2.10.2