chore(release): version 6.4.0 [skip ci]

## [6.4.0](v6.3.1...v6.4.0) (2024-02-02)

### Features

* Secretsmanager secret rotation for master user password ([#537](#537)) ([93c85ef](93c85ef))

Author: semantic-release-bot

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file.
 
+## [6.4.0](https://github.com/terraform-aws-modules/terraform-aws-rds/compare/v6.3.1...v6.4.0) (2024-02-02)
+
+
+### Features
+
+* Secretsmanager secret rotation for master user password ([#537](https://github.com/terraform-aws-modules/terraform-aws-rds/issues/537)) ([93c85ef](https://github.com/terraform-aws-modules/terraform-aws-rds/commit/93c85efddeac23ce1dbf96f7e53d8326bca71e25))
+
 ### [6.3.1](https://github.com/terraform-aws-modules/terraform-aws-rds/compare/v6.3.0...v6.3.1) (2024-01-10)