GHSA-2v6m-6xw3-6467: Fleet: Sensitive Google Calendar credentials disclosed to low-privileged users

Fleet had a vulnerability where Google Calendar service account credentials (authentication information that grants access to Google Calendar) were visible to low-privilege users through an API endpoint (a way for programs to request data). This meant that even users with minimal permissions could retrieve sensitive private keys and potentially access calendar data or other Google services linked to that account.