Update pydantic samples to use contrib module #575

Job	Run time
build-lint-test (3.9, ubuntu-latest)	4m 55s
build-lint-test (3.9, macos-intel)	5m 11s
build-lint-test (3.9, macos-arm)	5m 12s
build-lint-test (3.9, windows-latest)	5m 4s
build-lint-test (3.12, ubuntu-latest)	4m 53s
build-lint-test (3.12, macos-intel)	5m 11s
build-lint-test (3.12, macos-arm)	5m 12s
build-lint-test (3.12, windows-latest)	5m 6s
	40m 44s

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