Their respective versions used in the clone repository can be checked in the package.json file. This will be updated as the bot and web repos are updated.
You can use GitHub RSS feeds to automatically track them.
Relevant Feeds To Track
Releases are only made here when files related to the clone repo have been changed. So when either the bot or web are updated, a commit will be made, but not a release. You may follow use the RSS feed for commits whenever the bot or web is updated: