Upgrade HAPI FHIR Client and FHIR Gateway dependencies

[ndegwamartin]

IMPORTANT: Where possible all PRs must be linked to a Github issue

Resolves [link to issue]

Engineer Checklist

• [ ] I have written Unit tests for any new feature(s) and edge cases for bug fixes
• [ ] I have run mvn spotless:check to check my code follows the project's style guide
• [ ] I have run mvn clean test to confirm all new and existing tests passed.
• [ ] I ran mvn clean package right before creating this pull request.