chore: release 0.20.0-beta

Author: aws-sdk-kotlin-ci

.changes/07860a56-6515-4545-8c04-4bbabaca7d36.json

@@ -1,5 +1,18 @@
 # Changelog
 
+## [0.20.0-beta] - 01/31/2023
+
+### Features
+* add ProcessCredentialsProvider which invokes a user-specified command to retrieve credentials
+* Allow config override for one or more operations with an existing service client.
+
+### Miscellaneous
+* **Breaking** Remove `Closeable` supertype from `HttpClientEngine` interface. See [this discussion post](https://github.com/awslabs/aws-sdk-kotlin/discussions/818) for more information.
+* Refactor the way service client configuration is generated
+* Upgrade Kotlin version to 1.8.0
+* Update to latest AWS service models.
+* Upgrade dependencies
+
 ## [0.19.5-beta] - 01/19/2023
 
 ### Miscellaneous

.changes/28f9e2e9-1bf0-4bea-be63-847e6ab1af5e.json

@@ -7,7 +7,7 @@ kotlin.mpp.enableCompatibilityMetadataVariant=true
 org.gradle.jvmargs=-Xmx6g -XX:MaxMetaspaceSize=2G
 
 # sdk
-sdkVersion=0.20.0-SNAPSHOT
+sdkVersion=0.20.0-beta
 
 # codegen
 smithyVersion=1.26.1
@@ -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/