As with previous versions, I simply followed the instructions in the release notes to update Mastodon to v4.7.0.
Each step went off without issues.
Shortly afterward, however, the monitoring system notified me that mastodon-streaming@4000.service was no longer running.
I then saw an error message in the log: TypeError: webidl.util.markAsUncloneable is not a function
Fortunately, the problem was quickly resolved.