docs: Add KMS aliases handling to IAM permissions (terraform-aws-modules#1288)

Author: ahamez

docs/iam-permissions.md

@@ -134,11 +134,14 @@ Following IAM permissions are the minimum permissions needed for your IAM user o
                 "logs:ListTagsLogGroup",
                 "logs:PutRetentionPolicy",
                 // Following permissions for working with secrets_encryption example
+                "kms:CreateAlias",
                 "kms:CreateGrant",
                 "kms:CreateKey",
+                "kms:DeleteAlias",
                 "kms:DescribeKey",
                 "kms:GetKeyPolicy",
                 "kms:GetKeyRotationStatus",
+                "kms:ListAliases",
                 "kms:ListResourceTags",
                 "kms:ScheduleKeyDeletion"
             ],