Update to Julia 1.9

[FriesischScott]

Should probably just need to update the workflows. I don't expect any issues with Julia 1.9 that need to be resolved.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (b4817a3) 98.83% compared to head (8aecbda) 98.83%.

❗ Current head 8aecbda differs from pull request most recent head 695eb55. Consider uploading reports for the commit 695eb55 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #110   +/-   ##
=======================================
  Coverage   98.83%   98.83%           
=======================================
  Files          21       22    +1     
  Lines         687      688    +1     
=======================================
+ Hits          679      680    +1     
  Misses          8        8           

see 1 file with indirect coverage changes

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