[ThinkCloud](https://cloud.thinkhead.org/) to Hub 30 (new sewer versionning), OS to 30.0.8

Tracking ticket for a line in release 5.0.48.9 that shipped without one.

Upgraded ThinkCloud to Hub 30 (new sewer versionning), OS to 30.0.8.

Created retroactively so every changelog line has a ticket a reader can follow.