chore(deps): update hapi to v6.8.4 (patch)

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ca.uhn.hapi.fhir:hapi-fhir-structures-dstu2 (source)	6.8.3 -> 6.8.4
ca.uhn.hapi.fhir:hapi-fhir-base (source)	6.8.3 -> 6.8.4
ca.uhn.hapi.fhir:hapi-fhir-structures-r4 (source)	6.8.3 -> 6.8.4

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Release Notes

hapifhir/hapi-fhir (ca.uhn.hapi.fhir:hapi-fhir-structures-dstu2)

v6.8.4

6.8.4

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Configuration

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🔕 Ignore: Close this PR and you won't be reminded about these updates again.

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

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[codecov]

Codecov Report

Merging #277 (98536ab) into main (f08c54b) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main     #277   +/-   ##
=========================================
  Coverage     32.17%   32.17%           
  Complexity        8        8           
=========================================
  Files            11       11           
  Lines           115      115           
  Branches          7        7           
=========================================
  Hits             37       37           
  Misses           78       78           

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