Update dub/ci

[shoo]

Update

• dmd 1.111.0
• dub 1.40.0
• CI
  • checkout@v4
  • dlang-setup@v2
  • upload-artifact@v4
  • download-artifact@v4
  • upload-pages-artifact@v3
  • deploy-pages@v4

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.30%. Comparing base (1b3668d) to head (c76f491).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #39      +/-   ##
==========================================
- Coverage   88.43%   88.30%   -0.14%     
==========================================
  Files           8        8              
  Lines        1133     1137       +4     
==========================================
+ Hits         1002     1004       +2     
- Misses        131      133       +2     

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