PY: regenerate python-us-core example and writer snapshots for strict… #1325

Job	Run time
test-python-fhirpy-sdk	1m 25s
test-typescript-us-core-example	35s
test-local-package-folder-example	16s
test-on-the-fly-example	52s
test-csharp-sdk	1m 23s
test-python-sdk	1m 17s
test-typescript-ccda-example	1m 12s
test-typescript-sdk-r4	17s
test-mustache-java-r4-example (25)	16s
test-mustache-java-r4-example (21)	15s
test-python-us-core-example	1m 0s
	8m 48s

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