backends: 🍒 s/rtlil/ilang (#1540, #1542) to `v0.5.x` #3606

Job	Run time
check-links	46s
document	44s
test (3.8)	2m 22s
smoke (amaranth-lang/amaranth-boards)	32s
test (3.9)	2m 17s
smoke (amaranth-lang/amaranth-stdio)	43s
test (3.10)	2m 23s
smoke (amaranth-lang/amaranth-soc)	44s
test (3.11)	2m 49s
test (3.12)	3m 28s
test (pypy-3.8)	5m 10s
test (pypy-3.9)	5m 7s
test (pypy-3.10)	4m 43s
test (3.13-dev)	3m 13s
publish-docs	4s
publish-docs-dev	0s
required	1s
publish-package	18s
publish-schemas	5s
publish-release	0s
	35m 29s

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