Push sector tags to Panopticon for detailed guides

When a detailed guide is assigned to a mainstream category which has a 
parent tag of "oil-and-gas", tag it with the appropriate industry_sector 
tag before we register the artefact with Panopticon.

We build the tag ID from the last part of the slug appended to the 
"oil-and-gas/" string.
Bump gds-api-adapters to 8.2.3

This includes changes to the Panopticon registerer so that industry 
sector tags can be provided for artefacts.
Merge pull request #1215 from alphagov/send-industry-sectors-to-panopticon

Push industry sectors to Panopticon for detailed guides