Update CHANGELOG.md

Author: rileykarson

CHANGELOG.md

@@ -1,4 +1,12 @@
-## 3.89.0 (Unreleased)
+## 3.90.0 (Unreleased)
+
+## 3.89.0 (October 18, 2021)
+
+BUG FIXES:
+* compute: fixed bug where `google_compute_router_peer` could not set an advertised route priority of 0, causing permadiff. ([#3718](https://github.com/hashicorp/terraform-provider-google-beta/pull/3718))
+* container: fixed a crash on `monitoring_config` of `google_container_cluster` ([#3717](https://github.com/hashicorp/terraform-provider-google-beta/pull/3717))
+* iam: fixed request batching bug where failed requests would show unnecessary backslash escaping to the user. ([#3723](https://github.com/hashicorp/terraform-provider-google-beta/pull/3723))
+* storage: fixed a bug to better handle eventual consistency among `google_storage_bucket` resources. ([#3715](https://github.com/hashicorp/terraform-provider-google-beta/pull/3715))
 
 ## 3.88.0 (October 11, 2021)
 NOTES: