Add recent changes to pending change log
Add recent changes to pending change log

Adds #2456 and #2343 to pending change for next release.
yxd-hde/aws-sdk-go,yxd-hde/aws-sdk-go,jasdel/aws-sdk-go,yxd-hde/aws-sdk-go,yxd-hde/aws-sdk-go,aws/aws-sdk-go