add `aws_backup_vault_lock_configuration` #21

Job	Run time
terraform-module / ci-labels	3s
terraform-module / ci-terraform / format	15s
terraform-module / ci-terraform / lint-find-dirs	4s
terraform-module / ci-readme / validate	12s
terraform-module / ci-codeowners / validate	8s
terraform-module / ci-terraform / lint (.)	16s
terraform-module / ci-terraform / lint (./examples/complete)	7s
terraform-module / ci	3s
	1m 8s

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