Prepare for v2.4.0 release

Author: stack72

CHANGELOG.md

@@ -1,9 +1,12 @@
 ## HEAD (Unreleased)
-* Upgrade to pulumi-terraform-bridge v2.7.3
-* Upgrade to Pulumi v2.9.0, which adds type annotations and input/output classes to Python
+_(none)_
 
 ---
 
+## 2.4.0 (2020-08-31)
+* Upgrade to pulumi-terraform-bridge v2.7.3
+* Upgrade to Pulumi v2.9.0, which adds type annotations and input/output classes to Python
+
 ## 2.3.0 (2020-07-30)
 * Upgrade to v1.7.1 of the Postgresql Terraform Provider