Updates `aws-sdk-go-base` to v2.0.0-beta.51 #11802

Job	Run time
Add Merged Pull Requests and Related Issues to Milestone	11s
Service Labeler	0s
Size Labeler	0s
Community Note	0s
New Contributor Note	0s
Community Check / Check community lists for username	1s
Add to Project	4s
Automation Labeler	8s
Verify Maintainers Editable	0s
	24s

Provide feedback