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Fixes #1579 S3 enforces a specific rule for validating bucket and object tag key/value names. This PR integrates the regexp pattern used by S3 for tag validation. Official S3 documentation for tag validation rules: [AWS S3 Tag](https://docs.aws.amazon.com/AmazonS3/latest/API/API_control_Tag.html) There are two types of tagging inputs for buckets and objects: 1. **On existing buckets/objects** — used in the `PutObjectTagging` and `PutBucketTagging` actions, where tags are provided in the request body. 2. **On object creation** — used in the `PutObject`, `CreateMultipartUpload`, and `CopyObject` actions, where tags are provided in the request headers and must be URL-encoded. This implementation ensures correct validation for both types of tag inputs.