[Copilot]

What this PR does / why we need it:

Pixi 0.75.0 reports the checked-in lockfile as out of date and exits before the integration tests start.

• Update the Pixi version to 0.84.1 in the DuckDB, Ray, and registration workflows.

Checks

• I've made sure the tests are passing.
• My commits are signed off (git commit -s)
• My PR title follows conventional commits format

Testing Strategy

• Unit tests
• Integration tests
• Manual tests
• Testing is not required for this change

Misc

[shuchu]

@franciscojavierarceo @ntkathole Are we still have the aws access provided by Redhat?

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 51.30%. Comparing base (170202d) to head (74237b9).
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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #7105   +/-   ##
=======================================
  Coverage   51.30%   51.30%           
=======================================
  Files         458      458           
  Lines       57423    57423           
  Branches     8417     8417           
=======================================
  Hits        29463    29463           
  Misses      25950    25950           
  Partials     2010     2010           

Flag	Coverage Δ
go-feature-server	30.58% <ø> (ø)
python-unit	52.78% <ø> (ø)

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[shuchu]

lgtm