Update ci to test on julia v1.8

[Affie]

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 85.92%. Comparing base (fdb6b2d) to head (21ac0c8). Report is 1 commits behind head on master.

:exclamation: Current head 21ac0c8 differs from pull request most recent head 29cc686

Please upload reports for the commit 29cc686 to get more accurate results.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #88   +/-   ##
=======================================
  Coverage   85.92%   85.92%           
=======================================
  Files           7        7           
  Lines         554      554           
=======================================
  Hits          476      476           
  Misses         78       78           

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