feat: Add schedule_expression_timezone support to aws_backup_plan

[lgallard]

New Argument Enhancement Request

Enhancement Details

Resource: aws_backup_plan
New Argument: schedule_expression_timezone
Priority: medium

Description

The timezone in which the schedule expression is set. Default value: 'Etc/UTC'

Implementation Impact

Enhances scheduling precision and global deployment support

Auto-Discovery Metadata

• Discovered by: AWS Backup Feature Discovery Bot
• Scan Date: 2025-01-16T10:15:00Z
• Workflow Run: 19397556205

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Auto-generated by AWS Backup Feature Discovery Bot