Test

📝 Update code examples to Python 3.9 #3158

Job	Run time
test (ubuntu-latest, 3.10, pydantic-v1)	35s
test (ubuntu-latest, 3.14, pydantic-v2)	35s
test (windows-latest, 3.9, pydantic-v2)	1m 0s
test (macos-latest, 3.11, pydantic-v2)	42s
test (macos-latest, 3.14, pydantic-v2)	39s
test (macos-latest, 3.13, pydantic-v2)	31s
test (ubuntu-latest, 3.13, pydantic-v1)	39s
test (windows-latest, 3.14, pydantic-v2)	1m 1s
test (windows-latest, 3.12, pydantic-v1)	58s
coverage-combine	17s
alls-green	3s
	7m 0s

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