Bump github.com/aws/aws-sdk-go-v2/config from 1.27.43 to 1.28.0 in /provider/appconfig in the aws-sdk-go group

Bump github.com/aws/aws-sdk-go-v2/config from 1.27.43 to 1.28.0 in /provider/appconfig in the aws-sdk-go group #1336