Add conformance testing CI pipeline #244

Job	Run time
checks / readme-snippets	13s
checks / pre-commit	33s
checks / test (3.10, lowest-direct, windows-latest)	2m 33s
checks / test (3.10, locked, windows-latest)	2m 20s
checks / test (3.11, lowest-direct, ubuntu-latest)	47s
checks / test (3.11, lowest-direct, windows-latest)	2m 38s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 11s
checks / test (3.14, locked, ubuntu-latest)	2m 20s
checks / test (3.11, locked, ubuntu-latest)	48s
checks / test (3.14, lowest-direct, windows-latest)	2m 24s
checks / test (3.13, locked, ubuntu-latest)	45s
checks / test (3.14, locked, windows-latest)	3m 26s
checks / test (3.13, locked, windows-latest)	2m 31s
checks / test (3.12, lowest-direct, ubuntu-latest)	48s
checks / test (3.12, locked, ubuntu-latest)	52s
checks / test (3.11, locked, windows-latest)	2m 28s
checks / test (3.10, lowest-direct, ubuntu-latest)	47s
checks / test (3.12, locked, windows-latest)	3m 29s
checks / test (3.12, lowest-direct, windows-latest)	3m 24s
checks / test (3.13, lowest-direct, ubuntu-latest)	42s
checks / test (3.10, locked, ubuntu-latest)	47s
checks / test (3.13, lowest-direct, windows-latest)	2m 33s
all-green	3s
	38m 22s

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