Bump ca.uhn.hapi.fhir:hapi-fhir-structures-dstu3 in /service

Bumps ca.uhn.hapi.fhir:hapi-fhir-structures-dstu3 from 5.7.2 to 7.6.1.

---
updated-dependencies:
- dependency-name: ca.uhn.hapi.fhir:hapi-fhir-structures-dstu3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

service/build.gradle

@@ -25,7 +25,7 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.apache.qpid:qpid-jms-client:2.6.1'
     implementation 'org.springframework:spring-jms'
-    implementation 'ca.uhn.hapi.fhir:hapi-fhir-structures-dstu3:5.7.2'
+    implementation 'ca.uhn.hapi.fhir:hapi-fhir-structures-dstu3:7.6.1'
     implementation 'uk.nhs.connect.iucds:iucds-schema:3.0.RC1.2'
     implementation 'org.apache.xmlbeans:xmlbeans:3.1.0'
     implementation 'com.rabbitmq.jms:rabbitmq-jms:3.4.0'