ci: Fix ci errors

[inkydragon]

Trying to fix ci errors:

• ❌ ci: resolve .ci/Manifest.toml with latest nightly version
  Version 1.12.0-DEV.1904 (2025-01-17) Commit 11c692e1084
• Use julia v1.11
• Fix all failed tests nothing to do

[inkydragon]

We could successfully compile the system image, but many tests failed.
Is testing with stable version v1.11 a good option?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (cecf025) to head (7ef85cf).

Additional details and impacted files

@@          Coverage Diff           @@
##           master   #1175   +/-   ##
======================================
  Coverage    0.00%   0.00%           
======================================
  Files          34      34           
  Lines       15619   15619           
======================================
  Misses      15619   15619           

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[inkydragon]

After rebase, this pr passed all tests.

Maybe merge this first?
Or I'll add/switch to nightly again to see if it works now.

[KristofferC]

Imo we should run with nightly. Backport branches run with the respective julia version they target.

[inkydragon]

Yes, so replaced by #1178