Update Dry Run Case Matching

Update the dry-run case matching setting for the current customer.

This endpoint is restricted to developer users only.

• dry_run_case_matching: Set to true to enable dry-run mode

When dry-run mode is enabled:

• Case matching still runs automatically
• Matches are flagged as "pending approval" instead of being finalized
• Developers can review and approve/reject matches in the call detail view
• Case notes are only posted after manual approval

Note: This endpoint is maintained for backward compatibility. Prefer using /case-notes-settings for new integrations.