chore: test Mooncake on Julia 1.12

[gdalle]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.15%. Comparing base (c27354b) to head (6401b95).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #913   +/-   ##
=======================================
  Coverage   98.15%   98.15%           
=======================================
  Files         134      134           
  Lines        8022     8022           
=======================================
  Hits         7874     7874           
  Misses        148      148           

Flag	Coverage Δ
DI	98.85% <ø> (ø)
DIT	96.39% <ø> (ø)

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