sudo apt upgrade每次我在终端中使用命令时，我都会得到以下信息：
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
#
# You can verify the status of security fixes using the `pro fix` command.
# E.g., a recent Ruby vulnerability can be checked with: `pro fix USN-6219-1`
# For more detail see: https://ubuntu.com/security/notices/USN-6219-1
#
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
请帮助我摆脱此消息“您可以验证......”
它是从哪里来的？我不明白为什么我现在才看到它？