feat: Support passing KMS key to bucket encryption configuration

[esacteksab]

This copies aws_s3_server_side_encryption_configuration from terraform-aws-s3-private-bucket here. This adds two supporting variables kms_master_key_id and bucket_key_enabled. As defined, this contiues to support AES256 as the default algorithm that the current module supports.

elb_log_prefixes is changed from a string to a list(string) as resources in an iam_policy_document expects resources to be a list. This mirrors nlb_log_prefixes and alb_log_refixes which are already list(string) types.

• chore: remove unnecessary file
• chore: pinning github action
• chore: renovate renovate config
• chore: ignore lock file
• chore: pre-commit autoupdate
• feat: pass KMS key to bucket encryption