dlang: support `saladVersion` #1238

Job	Run time
Schema Salad release test	9m 6s
CI linters via Tox (lintreadme)	27s
CI linters via Tox (pydocstyle)	28s
CI tests via Tox (3, 6, bandit)	35s
CI tests via Tox (3, 6, unit)	3m 51s
CI tests via Tox (3, 7, lint)	33s
CI tests via Tox (3, 7, bandit)	26s
CI tests via Tox (3, 7, unit)	3m 40s
CI tests via Tox (3, 7, mypy)	3m 10s
CI tests via Tox (3, 7, memleak)	1m 28s
CI tests via Tox (3, 8, lint)	36s
CI tests via Tox (3, 8, bandit)	23s
CI tests via Tox (3, 8, unit)	4m 12s
CI tests via Tox (3, 8, mypy)	2m 59s
CI tests via Tox (3, 8, memleak)	1m 25s
CI tests via Tox (3, 9, lint)	20s
CI tests via Tox (3, 9, bandit)	20s
CI tests via Tox (3, 9, unit)	3m 10s
CI tests via Tox (3, 9, mypy)	2m 57s
CI tests via Tox (3, 9, memleak)	1m 45s
CI tests via Tox (3, 10, lint)	21s
CI tests via Tox (3, 10, bandit)	20s
CI tests via Tox (3, 10, unit)	4m 28s
CI tests via Tox (3, 10, mypy)	2m 54s
CI tests via Tox (3, 10, memleak)	1m 43s
CI tests via Tox (3, 11, lint)	18s
CI tests via Tox (3, 11, bandit)	22s
CI tests via Tox (3, 11, unit)	3m 58s
CI tests via Tox (3, 11, mypy)	2m 40s
CI tests via Tox (3, 11, memleak)	1m 23s
build_test_container	3m 22s
	1h 3m 40s

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