[r4][aubase421] Update aubase421

[Sanjana-Attanayake]

Purpose

The health tool release of 4.0.0 package following changes are expected in the package.

Goals

1. Addition of extended elements in an IG.
2. Addition of content reference elements.

Dependents

1. aucore040

Approach

Generation of Content Reference Elements and Extensions

Changed Resources

datatypes.bal
extensions.bal
resource_auassertion_no_relevant_finding.bal
resource_aubase_allergy_intolerance.bal
resource_aubase_composition.bal
resource_aubase_coverage.bal
resource_aubase_diagnostic_imaging_report.bal
resource_aubase_diagnostic_imaging_result.bal
resource_aubase_diagnostic_request.bal
resource_aubase_diagnostic_result.bal
resource_aubase_encounter.bal
resource_aubase_immunisation.bal
resource_aubase_medication.bal
resource_aubase_medication_administration.bal
resource_aubase_medication_dispense.bal
resource_aubase_medication_request.bal
resource_aubase_medication_statement.bal
resource_aubase_pathology_report.bal
resource_aubase_pathology_result.bal
resource_aubase_patient.bal
resource_aubase_practitioner.bal
resource_aubase_related_person.bal
resource_aubase_substance.bal
resource_auhealth_program_participation_summary.bal

Related PRs

Update health-tool for extension-gen and bug-fixes

Test environment

JDK: 21
Ballerina: 2201.12.3, 2201.12.8, 2201.12.9