docs(news): add 2026-03-27 mappings release entry

Document the publication of mapping set version 2026-03-27,
including new sex and gender term mappings.

Author: pedropaulofb

docs/news.md

@@ -1,5 +1,9 @@
 # News & Updates
 
+## 2026-03-27
+
+- **[Health-RI Ontology Mappings](https://w3id.org/health-ri/semantic-interoperability/mappings)** — Added: Published SSSOM mapping set version 2026-03-27, adding new mappings with sex and gender terms.
+
 ## 2026-03-24
 
 - **Enabling Semantic Traceability in Health Data: The Health-RI Semantic Interoperability Initiative** — Added: Published the [SWAT4HCLS 2026](https://www.swat4ls.org/) presentation deck in [PDF](https://w3id.org/health-ri/semantic-interoperability/documents/presentations/swat4hcls2026-enabling-semantic-traceability-in-health-data-v1.0.0.pdf) and [PowerPoint Show](https://w3id.org/health-ri/semantic-interoperability/documents/presentations/swat4hcls2026-enabling-semantic-traceability-in-health-data-v1.0.0.ppsx) formats as a standalone documents release. The [presented paper](https://w3id.org/health-ri/semantic-interoperability/documents/preprints/enabling-semantic-traceability-in-health-data-v1.1.0.pdf) was already available.