chore(deps): bump hapi.fhir.version from 7.6.1 to 8.0.0

Bumps `hapi.fhir.version` from 7.6.1 to 8.0.0.

Updates `ca.uhn.hapi.fhir:hapi-fhir-structures-r4` from 7.6.1 to 8.0.0

Updates `ca.uhn.hapi.fhir:hapi-fhir-structures-r5` from 7.6.1 to 8.0.0

---
updated-dependencies:
- dependency-name: ca.uhn.hapi.fhir:hapi-fhir-structures-r4
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: ca.uhn.hapi.fhir:hapi-fhir-structures-r5
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

pom.xml

@@ -55,7 +55,7 @@
         <java.version>11</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <lombok.version>1.18.36</lombok.version>
-        <hapi.fhir.version>7.6.1</hapi.fhir.version>
+        <hapi.fhir.version>8.0.0</hapi.fhir.version>
         <icu4j.version>76.1</icu4j.version>
         <junit.version>5.11.4</junit.version>
         <maven.compiler.plugin.version>3.13.0</maven.compiler.plugin.version>