chore: release kms 1.2.0 (#5445)

Author: yoshi-code-bot

kms/CHANGES.md

@@ -1,5 +1,12 @@
 # Changes
 
+## [1.2.0](https://www.github.com/googleapis/google-cloud-go/compare/kms/v1.1.0...kms/v1.2.0) (2022-02-04)
+
+
+### Features
+
+* **kms:** add a new EkmService API ([7f48e6b](https://www.github.com/googleapis/google-cloud-go/commit/7f48e6b68e59812208ea87b7861fad60169dc63a))
+
 ## [1.1.0](https://www.github.com/googleapis/google-cloud-go/compare/kms/v1.0.0...kms/v1.1.0) (2021-10-18)