build: make schema properties order stable

[kliushnichenko]

Now, with openapi.yaml in the repo, I also noticed that the spec is not always reproducible. A typical issue involves a boolean field/getter that causes properties to "jump" in the schema upon rebuild. This is a try to fix it without forcing an alphabetical order everywhere (trying to avoid an avalanche of changes in the existing OpenAPI specs)

[jknack]

never saw it. What OS and Java SDK are you running?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.15%. Comparing base (45d6975) to head (073d69d).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3984      +/-   ##
============================================
- Coverage     94.17%   94.15%   -0.02%     
+ Complexity     6652     6651       -1     
============================================
  Files           432      432              
  Lines         20893    20893              
  Branches       2096     2096              
============================================
- Hits          19675    19672       -3     
- Misses          760      764       +4     
+ Partials        458      457       -1     

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[kliushnichenko]

Windows 11, OpenJdk 21. It literally pops up only for a boolean field with a getter named is*. Everything else works perfectly