Update CHANGELOG.md for 4.18.0 (#4222)

* Update CHANGELOG.md

* Update CHANGELOG.md

Co-authored-by: Scott Suarez <[email protected]>

Co-authored-by: Scott Suarez <[email protected]>

Author: melinath

CHANGELOG.md

@@ -1,5 +1,20 @@
 ## 4.18.0 (Unreleased)
 
+FEATURES:
+* **New Resource:** `google_privateca_certificate_template_iam_binding` ([#4201](https://github.com/hashicorp/terraform-provider-google-beta/pull/4201))
+* **New Resource:** `google_privateca_certificate_template_iam_member` ([#4201](https://github.com/hashicorp/terraform-provider-google-beta/pull/4201))
+* **New Resource:** `google_privateca_certificate_template_iam_policy` ([#4201](https://github.com/hashicorp/terraform-provider-google-beta/pull/4201))
+
+IMPROVEMENTS:
+* bigtable: added `gc_rules` to `google_bigtable_gc_policy` resource. ([#4212](https://github.com/hashicorp/terraform-provider-google-beta/pull/4212))
+* dialogflow: added support for location based dialogflow resources ([#4206](https://github.com/hashicorp/terraform-provider-google-beta/pull/4206))
+* metastore: added support for encryption_config during service creation. ([#4204](https://github.com/hashicorp/terraform-provider-google-beta/pull/4204))
+* privateca: support update on CertificateAuthority and Certificate ([#4207](https://github.com/hashicorp/terraform-provider-google-beta/pull/4207))
+
+BUG FIXES:
+* Update mutex on google_apigee_instance_attachment to lock on org_id. ([#4203](https://github.com/hashicorp/terraform-provider-google-beta/pull/4203))
+* vpcaccess: fixed an issue where `google_vpc_access_connector` would be repeatedly recreated when `network` was not specified ([#4205](https://github.com/hashicorp/terraform-provider-google-beta/pull/4205))
+
 ## 4.17.0 (April 11, 2022)
 
 FEATURES: