Add Node debian core variant #697

Job	Run time
generate-matrix	3s
build (18.20.1, alpine3.18)	19s
build (18.20.1, alpine3.19)	18s
build (18.20.1, bookworm)	26s
build (18.20.1, bookworm-core, bookworm-slim)	41s
build (18.20.1, bookworm-slim)	39s
build (18.20.1, bullseye)	33s
build (18.20.1, bullseye-core, bullseye-slim)	41s
build (18.20.1, bullseye-slim)	45s
build (18.20.1, buster)	37s
build (18.20.1, buster-core, buster-slim)	41s
build (18.20.1, buster-slim)	40s
build (20.12.1, alpine3.18)	17s
build (20.12.1, alpine3.19)	20s
build (20.12.1, bookworm)	38s
build (20.12.1, bookworm-core, bookworm-slim)	43s
build (20.12.1, bookworm-slim)	50s
build (20.12.1, bullseye)	37s
build (20.12.1, bullseye-core, bullseye-slim)	41s
build (20.12.1, bullseye-slim)	46s
build (20.12.1, buster)	45s
build (20.12.1, buster-core, buster-slim)	45s
build (20.12.1, buster-slim)	43s
build (21.7.2, alpine3.18)	23s
build (21.7.2, alpine3.19)	18s
build (21.7.2, bookworm)	35s
build (21.7.2, bookworm-core, bookworm-slim)	49s
build (21.7.2, bookworm-slim)	38s
build (21.7.2, bullseye)	37s
build (21.7.2, bullseye-core, bullseye-slim)	39s
build (21.7.2, bullseye-slim)	42s
	18m 9s

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