Update converter to 7.0.15

[LTA-Thinking]

Description

Update the Liquid converter to 7.0.15

Related issues

Addresses User Story 194405

Testing

Existing unit tests

FHIR Team Checklist

• Update the title of the PR to be succinct and less than 65 characters
• Add a milestone to the PR for the sprint that it is merged (i.e. add S47)
• Tag the PR with the type of update: Bug, Build, Dependencies, Enhancement, New-Feature or Documentation
• Tag the PR with Open source, Azure API for FHIR (CosmosDB or common code) or Azure Healthcare APIs (SQL or common code) to specify where this change is intended to be released.
• Tag the PR with Schema Version backward compatible or Schema Version backward incompatible or Schema Version unchanged if this adds or updates Sql script which is/is not backward compatible with the code.
• When changing or adding behavior, if your code modifies the system design or changes design assumptions, please create and include an ADR.
• CI is green before merge
• Review squash-merge requirements

Semver Change (docs)

Patch|Skip|Feature|Breaking (reason)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.31%. Comparing base (5b31cf5) to head (6a6c846).
⚠️ Report is 13 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5598      +/-   ##
==========================================
- Coverage   77.36%   77.31%   -0.06%     
==========================================
  Files         993      997       +4     
  Lines       36418    36559     +141     
  Branches     5518     5549      +31     
==========================================
+ Hits        28175    28264      +89     
- Misses       6884     6920      +36     
- Partials     1359     1375      +16     

see 35 files with indirect coverage changes

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