Add conformance testing CI pipeline #242

Job	Run time
checks / pre-commit	34s
checks / readme-snippets	11s
checks / test (3.12, locked, windows-latest)	3m 29s
checks / test (3.10, locked, ubuntu-latest)	45s
checks / test (3.12, locked, ubuntu-latest)	51s
checks / test (3.12, lowest-direct, ubuntu-latest)	51s
checks / test (3.11, locked, ubuntu-latest)	45s
checks / test (3.12, lowest-direct, windows-latest)	3m 40s
checks / test (3.11, locked, windows-latest)	2m 55s
checks / test (3.11, lowest-direct, ubuntu-latest)	43s
checks / test (3.10, lowest-direct, ubuntu-latest)	46s
checks / test (3.13, lowest-direct, ubuntu-latest)	43s
checks / test (3.13, lowest-direct, windows-latest)	2m 24s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 19s
checks / test (3.10, locked, windows-latest)	2m 25s
checks / test (3.13, locked, windows-latest)	2m 14s
checks / test (3.14, locked, ubuntu-latest)	2m 18s
checks / test (3.11, lowest-direct, windows-latest)	2m 31s
checks / test (3.13, locked, ubuntu-latest)	41s
checks / test (3.14, lowest-direct, windows-latest)	2m 17s
checks / test (3.14, locked, windows-latest)	3m 1s
checks / test (3.10, lowest-direct, windows-latest)	2m 32s
all-green	4s
	37m 59s

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