Migrate `sns` resources to AWS SDK for Go v2 #2147

Job	Run time
go mod download	21s
markdown-lint	24s
go build	55s
Sweeper Functions Not Linked	2m 28s
go test	6m 40s
importlint	26s
go generate	4m 27s
terraform providers schema	34s
tfproviderdocs	26s
	16m 41s

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