Align with Commonalities 4.4 #200

Problem description

The Analysis of Commonalities 0.9.0 (r4.4) indicates the changes impacting OAS files. The following checklist shows which of these apply to SimpleEdgeDiscovery.

Applicable:
✅ #665 Error responses redesign
✅ #660 info.description template line spacing

Checked and non-applicable:
❌ #654 SingleIpv6Address scheme
❌ #645 Date schema
❌ #646 Sink schema
❌ #680 sink behaviour in implicit subscription
❌ #670 Config schema refactor
❌ #667 Integer safe range bounds

Expected behaviour

Create a sub-issue to fix the applicable required change(s).