chore: release 0.21.5-beta

Author: aws-sdk-kotlin-ci

.changes/1edf442d-9b00-45a8-a619-c1e22a933327.json

@@ -1,5 +1,15 @@
 # Changelog
 
+## [0.21.5-beta] - 04/06/2023
+
+### Fixes
+* [#492](https://github.com/awslabs/aws-sdk-kotlin/issues/492) Don't use potentially stale profile when retrieving credentials via IMDS.
+
+### Miscellaneous
+* Upgrade **smithy-kotlin** to 0.16.6
+* Sync AWS models to latest versions
+* Upgrade smithy to pull in protocol tests for intEnum support.
+
 ## [0.21.4-beta] - 03/30/2023
 
 ### Features

.changes/658003dd-8984-4eb2-a249-81ccfe4854e0.json

@@ -7,7 +7,7 @@ kotlin.mpp.enableCompatibilityMetadataVariant=true
 org.gradle.jvmargs=-Xmx6g -XX:MaxMetaspaceSize=2G
 
 # sdk
-sdkVersion=0.21.5-SNAPSHOT
+sdkVersion=0.21.5-beta
 
 # codegen
 smithyVersion=1.29.0
@@ -39,4 +39,4 @@ mockkVersion=1.13.3
 slf4jVersion=2.0.6
 
 # dokka config (values specified at build-time as needed)
-smithyKotlinDocBaseUrl=https://sdk.amazonaws.com/kotlin/api/smithy-kotlin/api/$smithyKotlinVersion/
+smithyKotlinDocBaseUrl=https://sdk.amazonaws.com/kotlin/api/smithy-kotlin/api/$smithyKotlinVersion/