Release 2.23.20. Updated CHANGELOG.md, README.md and all pom.xml.

Author: AWS

.changes/2.23.20.json

@@ -0,0 +1,54 @@
+{
+    "version": "2.23.20",
+    "date": "2024-02-07",
+    "entries": [
+        {
+            "type": "bugfix",
+            "category": "AWS CRT Sync HTTP Client",
+            "contributor": "",
+            "description": "Fixed an issue where `CancellationException` was thrown incorrectly from AWS CRT Sync HTTP client when execution time exceeded the total configured API call attempt timeout or API call timeout. Now it throws `ApiCallAttemptTimeoutException`/`ApiCallTimeoutException` accordingly. See [#4820](https://github.com/aws/aws-sdk-java-v2/issues/4820)"
+        },
+        {
+            "type": "feature",
+            "category": "AWS SDK for Java v2",
+            "contributor": "",
+            "description": "Bump `aws-crt` version to `0.29.9`"
+        },
+        {
+            "type": "feature",
+            "category": "AWS DataSync",
+            "contributor": "",
+            "description": "AWS DataSync now supports manifests for specifying files or objects to transfer."
+        },
+        {
+            "type": "feature",
+            "category": "Amazon CloudFront KeyValueStore",
+            "contributor": "",
+            "description": "Switching CloudFront KeyValueStore onto the new SRA (Smithy Reference Architecture) identity and auth logic that was released in v2.21.0."
+        },
+        {
+            "type": "feature",
+            "category": "Amazon Lex Model Building V2",
+            "contributor": "",
+            "description": "This release introduces a new bot replication feature as part of Lex Global Resiliency offering. This feature leverages a new set of APIs that allow customers to create bot replicas and replicate changes to bots across regions."
+        },
+        {
+            "type": "feature",
+            "category": "Amazon Redshift",
+            "contributor": "",
+            "description": "LisRecommendations API to fetch Amazon Redshift Advisor recommendations."
+        },
+        {
+            "type": "feature",
+            "category": "AWS CRT-based S3 Client",
+            "contributor": "",
+            "description": "Exposes a setting to set the memory limit when making asynchronous calls with the CRT-based S3 client"
+        },
+        {
+            "type": "feature",
+            "category": "AWS SDK for Java v2",
+            "contributor": "",
+            "description": "Updated endpoint and partition metadata."
+        }
+    ]
+}

.changes/next-release/bugfix-AWSCRTSyncHTTPClient-660cc21.json

@@ -1,4 +1,34 @@
  #### 👋 _Looking for changelogs for older versions? You can find them in the [changelogs](./changelogs) directory._
+# __2.23.20__ __2024-02-07__
+## __AWS CRT Sync HTTP Client__
+  - ### Bugfixes
+    - Fixed an issue where `CancellationException` was thrown incorrectly from AWS CRT Sync HTTP client when execution time exceeded the total configured API call attempt timeout or API call timeout. Now it throws `ApiCallAttemptTimeoutException`/`ApiCallTimeoutException` accordingly. See [#4820](https://github.com/aws/aws-sdk-java-v2/issues/4820)
+
+## __AWS CRT-based S3 Client__
+  - ### Features
+    - Exposes a setting to set the memory limit when making asynchronous calls with the CRT-based S3 client
+
+## __AWS DataSync__
+  - ### Features
+    - AWS DataSync now supports manifests for specifying files or objects to transfer.
+
+## __AWS SDK for Java v2__
+  - ### Features
+    - Bump `aws-crt` version to `0.29.9`
+    - Updated endpoint and partition metadata.
+
+## __Amazon CloudFront KeyValueStore__
+  - ### Features
+    - Switching CloudFront KeyValueStore onto the new SRA (Smithy Reference Architecture) identity and auth logic that was released in v2.21.0.
+
+## __Amazon Lex Model Building V2__
+  - ### Features
+    - This release introduces a new bot replication feature as part of Lex Global Resiliency offering. This feature leverages a new set of APIs that allow customers to create bot replicas and replicate changes to bots across regions.
+
+## __Amazon Redshift__
+  - ### Features
+    - LisRecommendations API to fetch Amazon Redshift Advisor recommendations.
+
 # __2.23.19__ __2024-02-06__
 ## __AWS AppSync__
   - ### Features