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

Bumps ca.uhn.hapi.fhir:hapi-fhir-structures-dstu3 from 7.6.1 to 8.4.0.

---
updated-dependencies:
- dependency-name: ca.uhn.hapi.fhir:hapi-fhir-structures-dstu3
  dependency-version: 8.4.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

service/build.gradle

@@ -61,7 +61,7 @@ dependencies {
 	implementation 'org.apache.tika:tika-core:3.2.0'
 
 	// Fhir
-	implementation 'ca.uhn.hapi.fhir:hapi-fhir-structures-dstu3:7.6.1'
+	implementation 'ca.uhn.hapi.fhir:hapi-fhir-structures-dstu3:8.4.0'
 
 	// Test
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'