✨ support AWS_S3_REGION_NAME in env config for S3 region setting

[nksgw11]

Description

Previously, the code did not support setting the AWS S3 region name through the environment configuration file. This commit adds support for specifying the region using the AWS_S3_REGION_NAME variable, allowing users to configure the S3 region as needed.

Type of change

• 🚨 Breaking change - causes existing functionality to break (triggers MAJOR version bump)
• ✨ New feature - adds functionality in a non-breaking way (triggers MINOR version bump)
• 🐛 Bug fix - fixes an issue without changing functionality (triggers PATCH version bump)
• 🏠 Internal - changes that don't affect external functionality (no version bump)
  (e.g., refactoring, docs, tests, admin site changes)

Release Impact

• Current version:
• Next version will be:

Checklist

• My code follows the style guidelines
• My code is tested with 99%+ coverage
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have updated the documentation to reflect my changes
• I have added/updated tests to cover my changes

Breaking Changes

Migration Guide

Additional Notes

[nksgw11]

relate to #142