Update-with-start: shopping cart (#156) #543

Job	Run time
build-lint-test (3.8, ubuntu-latest)	4m 58s
build-lint-test (3.8, macos-intel)	5m 44s
build-lint-test (3.8, windows-latest)	5m 50s
build-lint-test (3.12, ubuntu-latest)	5m 30s
build-lint-test (3.12, macos-intel)	6m 24s
build-lint-test (3.12, macos-arm)	5m 46s
build-lint-test (3.12, windows-latest)	6m 6s
	40m 18s

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