Reduce the number of CI tests on PR #2

Job	Run time
tests (ubuntu-latest, 3.8, data_dependency)	23s
tests (ubuntu-latest, 3.8, path_filtering)	24s
tests (ubuntu-latest, 3.8, erc)	22s
tests (ubuntu-latest, 3.8, find_paths)	28s
tests (ubuntu-latest, 3.8, flat)	23s
tests (ubuntu-latest, 3.8, interface)	30s
tests (ubuntu-latest, 3.8, printers)	1m 4s
tests (ubuntu-latest, 3.8, slither_config)	25s
tests (ubuntu-latest, 3.8, upgradability)	43s
tests (ubuntu-latest, 3.12, data_dependency)	30s
tests (ubuntu-latest, 3.12, path_filtering)	34s
tests (ubuntu-latest, 3.12, erc)	27s
tests (ubuntu-latest, 3.12, find_paths)	27s
tests (ubuntu-latest, 3.12, flat)	26s
tests (ubuntu-latest, 3.12, interface)	29s
tests (ubuntu-latest, 3.12, printers)	1m 2s
tests (ubuntu-latest, 3.12, slither_config)	26s
tests (ubuntu-latest, 3.12, upgradability)	48s
	9m 51s

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