tests/interaction: era-axis machinery for the requirements manifest #2775

Job	Run time
checks / readme-snippets	13s
checks / pre-commit	42s
checks / test (3.11, lowest-direct, windows-latest)	1m 28s
checks / test (3.10, lowest-direct, windows-latest)	1m 36s
checks / test (3.10, locked, windows-latest)	1m 25s
checks / test (3.11, locked, ubuntu-latest)	57s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 2s
checks / test (3.11, lowest-direct, ubuntu-latest)	58s
checks / test (3.11, locked, windows-latest)	1m 27s
checks / test (3.12, lowest-direct, windows-latest)	1m 32s
checks / test (3.10, locked, ubuntu-latest)	1m 2s
checks / test (3.12, locked, windows-latest)	1m 39s
checks / test (3.12, locked, ubuntu-latest)	1m 4s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 8s
checks / test (3.13, locked, ubuntu-latest)	48s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 3s
checks / test (3.14, lowest-direct, windows-latest)	1m 15s
checks / test (3.14, locked, ubuntu-latest)	2m 0s
checks / test (3.14, locked, windows-latest)	2m 32s
checks / test (3.13, lowest-direct, windows-latest)	1m 30s
checks / test (3.14, lowest-direct, ubuntu-latest)	55s
checks / test (3.13, locked, windows-latest)	1m 24s
all-green	3s
	27m 43s

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