Add Julia v1.11 to CI and buildkite config

[ytdHuang]

Since the Julia v1.11 has released, we should update the CI config and buildkite config

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.71%. Comparing base (87ce64e) to head (7d133a1).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #262      +/-   ##
==========================================
- Coverage   93.16%   92.71%   -0.45%     
==========================================
  Files          31       31              
  Lines        2327     2321       -6     
==========================================
- Hits         2168     2152      -16     
- Misses        159      169      +10     

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[albertomercurio]

What about the other CIs? I don't remember, like the benchmark tracking and others?

[ytdHuang]

What about the other CIs? I don't remember, like the benchmark tracking and others?

Those always use version: '1', so should be okay.