[NRL-2059] Update STU3 reference to FHIR R4 and fix encoding issue#220

CHSNW6 merged 1 commit intomasterNHSDigital/nrl-consumer-api:masterfrom

feature/chsnw6-NRL-2059-Update-STU3-references-with-FHIR-R4-equivalentNHSDigital/nrl-consumer-api:feature/chsnw6-NRL-2059-Update-STU3-references-with-FHIR-R4-equivalentCopy head branch name to clipboard