Add 'v2.0.0-beta.48' CHANGELOG entry.

Author: ewbankkit

CHANGELOG.md

@@ -1,11 +1,21 @@
 <!-- markdownlint-disable single-title -->
 # v2.0.0 (Unreleased)
 
+# v2.0.0-beta.48 (2024-02-21)
+
+BUG FIXES
+
+* Updates dependencies.
+
+ENHANCEMENTS
+
+* Adds `TokenBucketRateLimiterCapacity` parameter to configure token bucket rate limiter capacity ([#933](https://github.com/hashicorp/aws-sdk-go-base/pull/933))
+
 # v2.0.0-beta.47 (2024-02-14)
 
 BUG FIXES
 
-* Ensures that each AWS SDK for Go v2 API client gets an independent `Retryer`. ([#918](https://github.com/hashicorp/aws-sdk-go-base/pull/918))
+* Ensures that each AWS SDK for Go v2 API client gets an independent `Retryer` ([#918](https://github.com/hashicorp/aws-sdk-go-base/pull/918))
 * Updates dependencies.
 
 # v2.0.0-beta.46 (2024-01-03)
@@ -16,7 +26,7 @@ BUG FIXES
 
 ENHANCEMENTS
 
-* Adds support for AWS region `ca-west-1`. ([#858](https://github.com/hashicorp/aws-sdk-go-base/pull/858))
+* Adds support for AWS region `ca-west-1` ([#858](https://github.com/hashicorp/aws-sdk-go-base/pull/858))
 
 # v2.0.0-beta.45 (2023-12-12)