CHANGELOG.md in aws-sdk-kms-1.55.0 vs CHANGELOG.md in aws-sdk-kms-1.56.0

@@ -1,7 +1,12 @@
 Unreleased Changes
 ------------------
 
+1.56.0 (2022-04-19)
+------------------
+
+* Feature - Adds support for KMS keys and APIs that generate and verify HMAC codes
+
 1.55.0 (2022-02-24)
 ------------------
 
 * Feature - Code Generated Changes, see `./build_tools` or `aws-sdk-core`'s CHANGELOG.md for details.
 
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