#38 - fix JSON schema generation #81

Job	Run time
Ruff linting, formating, MyPy	1m 8s
Test with coverage (3.10, ubuntu-latest)	12s
Test with coverage (3.9, ubuntu-latest)	16s
Test with coverage (3.8, ubuntu-latest)	13s
Test with coverage (3.11, ubuntu-latest)	15s
Test with coverage (3.12, ubuntu-latest)	9s
Test with coverage (3.13, ubuntu-latest)	18s
Windows/MacOS unit tests (3.8, macos-latest)	2m 10s
Windows/MacOS unit tests (3.8, windows-latest)	2m 1s
Windows/MacOS unit tests (3.9, windows-latest)	2m 37s
Windows/MacOS unit tests (3.9, macos-latest)	1m 31s
Windows/MacOS unit tests (3.12, macos-latest)	35s
Windows/MacOS unit tests (3.13, macos-latest)	1m 3s
Windows/MacOS unit tests (3.12, windows-latest)	2m 5s
Windows/MacOS unit tests (3.13, windows-latest)	1m 59s
Windows/MacOS unit tests (3.11, windows-latest)	2m 31s
Windows/MacOS unit tests (3.11, macos-latest)	58s
Windows/MacOS unit tests (3.10, macos-latest)	56s
Windows/MacOS unit tests (3.10, windows-latest)	1m 50s
	22m 47s

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