CI: Upgrade from setup-julia@v2 to v3

[DilumAluthge]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.66%. Comparing base (39a27fe) to head (9c5019a).

Additional details and impacted files

@@ Coverage Diff @@## master #804 +/- ##
==========================================
- Coverage 90.75% 90.66% -0.10% 
==========================================
Files 11 11 Lines 1071 1071 ==========================================
- Hits 972 971 -1 - Misses 99 100 +1 

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[DilumAluthge]

CI looks good on min.

I am seeing failures on pre, which seem to also occur on master (#805). @devmotion Are the pre failures a known issue?

[devmotion]

We don't want this PR, we want #802.

Pre failures are known and caused by incorrect version bounds for JET in the registry IIRC.