[instructions] Sync github-agentic-workflows.md with release v0.33.12

[github-actions]

Instructions Update - Synchronized with v0.33.12

This PR updates the github-agentic-workflows.md file based on documentation changes since the last release.

Changes Made

• Updated Auto-Expiration description to reflect dynamic maintenance scheduling behavior

Documentation Commits Reviewed

• 6cb13be docs: update safe-outputs documentation for dynamic maintenance scheduling ([docs] Update documentation for dynamic maintenance scheduling feature #8203)

Details

The expires field for safe-outputs.create-issue now generates a maintenance workflow with dynamic scheduling based on the shortest expiration time across all workflows, rather than running daily:

• 1 day or less → every 2 hours
• 2 days → every 6 hours
• 3-4 days → every 12 hours
• 5+ days → daily

This change improves efficiency by running maintenance only as frequently as needed based on actual expiration times configured in workflows.

Validation

• Followed prompting best practices (imperative mood, minimal examples)
• Maintained technical tone and brevity
• Updated only necessary sections
• Verified accuracy against current codebase
• Removed outdated content (changed "daily" to dynamic schedule)
• Made minimal surgical edit (1 line changed)

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