Add Node debian core variant #699

Job	Run time
generate-matrix	5s
build (18.20.1, alpine3.18)	45s
build (18.20.1, alpine3.19)	19s
build (18.20.1, bookworm)	38s
build (18.20.1, bookworm-core, bookworm-slim)	46s
build (18.20.1, bookworm-slim)	47s
build (18.20.1, bullseye)	1m 20s
build (18.20.1, bullseye-core, bullseye-slim)	45s
build (18.20.1, bullseye-slim)	1m 4s
build (18.20.1, buster)	36s
build (18.20.1, buster-core, buster-slim)	1m 27s
build (18.20.1, buster-slim)	45s
build (20.12.1, alpine3.18)	20s
build (20.12.1, alpine3.19)	23s
build (20.12.1, bookworm)	39s
build (20.12.1, bookworm-core, bookworm-slim)	1m 3s
build (20.12.1, bookworm-slim)	43s
build (20.12.1, bullseye)	1m 17s
build (20.12.1, bullseye-core, bullseye-slim)	1m 57s
build (20.12.1, bullseye-slim)	51s
build (20.12.1, buster)	46s
build (20.12.1, buster-core, buster-slim)	43s
build (20.12.1, buster-slim)	2m 6s
build (21.7.2, alpine3.18)	22s
build (21.7.2, alpine3.19)	16s
build (21.7.2, bookworm)	40s
build (21.7.2, bookworm-core, bookworm-slim)	44s
build (21.7.2, bookworm-slim)	1m 19s
build (21.7.2, bullseye)	1m 18s
build (21.7.2, bullseye-core, bullseye-slim)	1m 1s
build (21.7.2, bullseye-slim)	45s
	26m 30s

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