Add missing AWS S3 bucket naming restrictions

[Copilot]

AWS updated their S3 bucket naming rules to reserve additional prefixes and suffixes. The ruleset was missing four restrictions from the current documentation.

Changes

• Added amzn-s3-demo- to restricted prefix regex (used for AWS documentation examples)
• Added .mrap suffix restriction (Multi-Region Access Points)
• Added --x-s3 suffix restriction (AWS reserved)
• Added --table-s3 suffix restriction (S3 Tables feature)

Example

resource "aws_s3_bucket" "invalid" {
  bucket = "amzn-s3-demo-bucket"  # Now caught as invalid
}

resource "aws_s3_bucket" "invalid" {
  bucket = "my-bucket.mrap"  # Now caught as invalid
}

Original prompt

Please update regexRules in rules/aws_s3_bucket_name.go

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