fix: align update EM pipeline request to new specs

[CanobbioE]

ENG-5051

Checklist

• make test passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

Description of change

Fix for bug https://indykite.atlassian.net/browse/ENG-5051 broke the sdk tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.30%. Comparing base (ed814a4) to head (27574e9).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #285   +/-   ##
=======================================
  Coverage   72.30%   72.30%           
=======================================
  Files          39       39           
  Lines        2011     2011           
=======================================
  Hits         1454     1454           
  Misses        493      493           
  Partials       64       64           

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[deepsource-io]

Here's the code health analysis summary for commits ed814a4..27574e9. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Go	✅ Success		View Check ↗

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[cowan-macady]

It is a lot of breaking changes.
Are you sure nobody is using EM ?