Add a notification on changelog updates

[Mastiff]

There are no indicators that the site got updated, while I think it would make sense to have some sort of notification.

Ironically, the SE contests MOTM and MOTQ have more exposure than https://Holisticz.gg/misc2.php?action=changelog.

 

[SANTA]

@J_S

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[Mastiff]

This is a bump