v1.3.0 - Improved Preboot Logging and Time Tracking

What's Changed

• Added precise timestamp logging at the start and end of the Preboot volume update process (diskutil apfs updatePreboot /).
• Improved auditability by ensuring clear time window logs for Preboot operations.
• Full diskutil output is still captured into the custom log (/var/log/policy_banner_update.log) for detailed auditing.
• Jamf Pro console logs are now filtered to only show success or failure summaries, preventing log truncation.
• Maintains version-aware logic to skip unreliable /private/var/db/.PolicyBanner checks on macOS 14+ (Sonoma and newer).